diff --git a/library/smarty/libs/sysplugins/smarty_internal_data.php b/library/smarty/libs/sysplugins/smarty_internal_data.php
new file mode 100644
--- /dev/null
+++ b/library/smarty/libs/sysplugins/smarty_internal_data.php
@@ -0,0 +1,389 @@
+<?php
+/**
+ * Smarty Internal Plugin Data
+ * This file contains the basic classes and methods for template and variable creation
+ *
+ * @package    Smarty
+ * @subpackage Template
+ * @author     Uwe Tews
+ */
+
+/**
+ * Base class with template and variable methods
+ *
+ * @package    Smarty
+ * @subpackage Template
+ */
+class Smarty_Internal_Data {
+    /**
+     * name of class used for templates
+     *
+     * @var string
+     */
+    public $template_class = 'Smarty_Internal_Template';
+    /**
+     * template variables
+     *
+     * @var array
+     */
+    public $tpl_vars = array();
+    /**
+     * parent template (if any)
+     *
+     * @var Smarty_Internal_Template
+     */
+    public $parent = null;
+    /**
+     * configuration settings
+     *
+     * @var array
+     */
+    public $config_vars = array();
+
+    /**
+     * assigns a Smarty variable
+     *
+     * @param  array|string $tpl_var the template variable name(s)
+     * @param  mixed $value the value to assign
+     * @param  boolean $nocache if true any output of this variable will be not cached
+     *
+     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining
+     */
+    public function assign($tpl_var, $value = null, $nocache = false) {
+        if (is_array($tpl_var)) {
+            foreach ($tpl_var as $_key => $_val) {
+                if ($_key != '') {
+                    $this->tpl_vars[$_key] = new Smarty_Variable($_val, $nocache);
+                }
+            }
+        } else {
+            if ($tpl_var != '') {
+                $this->tpl_vars[$tpl_var] = new Smarty_Variable($value, $nocache);
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * assigns a global Smarty variable
+     *
+     * @param  string $varname the global variable name
+     * @param  mixed $value the value to assign
+     * @param  boolean $nocache if true any output of this variable will be not cached
+     *
+     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining
+     */
+    public function assignGlobal($varname, $value = null, $nocache = false) {
+        if ($varname != '') {
+            Smarty::$global_tpl_vars[$varname] = new Smarty_Variable($value, $nocache);
+            $ptr = $this;
+            while ($ptr instanceof Smarty_Internal_Template) {
+                $ptr->tpl_vars[$varname] = clone Smarty::$global_tpl_vars[$varname];
+                $ptr = $ptr->parent;
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * assigns values to template variables by reference
+     *
+     * @param string $tpl_var the template variable name
+     * @param          $value
+     * @param  boolean $nocache if true any output of this variable will be not cached
+     *
+     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining
+     */
+    public function assignByRef($tpl_var, &$value, $nocache = false) {
+        if ($tpl_var != '') {
+            $this->tpl_vars[$tpl_var] = new Smarty_Variable(null, $nocache);
+            $this->tpl_vars[$tpl_var]->value = &$value;
+        }
+
+        return $this;
+    }
+
+    /**
+     * appends values to template variables
+     *
+     * @param  array|string $tpl_var the template variable name(s)
+     * @param  mixed $value the value to append
+     * @param  boolean $merge flag if array elements shall be merged
+     * @param  boolean $nocache if true any output of this variable will be not cached
+     *
+     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining
+     */
+    public function append($tpl_var, $value = null, $merge = false, $nocache = false) {
+        if (is_array($tpl_var)) {
+            // $tpl_var is an array, ignore $value
+            foreach ($tpl_var as $_key => $_val) {
+                if ($_key != '') {
+                    if (!isset($this->tpl_vars[$_key])) {
+                        $tpl_var_inst = $this->getVariable($_key, null, true, false);
+                        if ($tpl_var_inst instanceof Smarty_Undefined_Variable) {
+                            $this->tpl_vars[$_key] = new Smarty_Variable(null, $nocache);
+                        } else {
+                            $this->tpl_vars[$_key] = clone $tpl_var_inst;
+                        }
+                    }
+                    if (!(is_array($this->tpl_vars[$_key]->value) || $this->tpl_vars[$_key]->value instanceof ArrayAccess)) {
+                        settype($this->tpl_vars[$_key]->value, 'array');
+                    }
+                    if ($merge && is_array($_val)) {
+                        foreach ($_val as $_mkey => $_mval) {
+                            $this->tpl_vars[$_key]->value[$_mkey] = $_mval;
+                        }
+                    } else {
+                        $this->tpl_vars[$_key]->value[] = $_val;
+                    }
+                }
+            }
+        } else {
+            if ($tpl_var != '' && isset($value)) {
+                if (!isset($this->tpl_vars[$tpl_var])) {
+                    $tpl_var_inst = $this->getVariable($tpl_var, null, true, false);
+                    if ($tpl_var_inst instanceof Smarty_Undefined_Variable) {
+                        $this->tpl_vars[$tpl_var] = new Smarty_Variable(null, $nocache);
+                    } else {
+                        $this->tpl_vars[$tpl_var] = clone $tpl_var_inst;
+                    }
+                }
+                if (!(is_array($this->tpl_vars[$tpl_var]->value) || $this->tpl_vars[$tpl_var]->value instanceof ArrayAccess)) {
+                    settype($this->tpl_vars[$tpl_var]->value, 'array');
+                }
+                if ($merge && is_array($value)) {
+                    foreach ($value as $_mkey => $_mval) {
+                        $this->tpl_vars[$tpl_var]->value[$_mkey] = $_mval;
+                    }
+                } else {
+                    $this->tpl_vars[$tpl_var]->value[] = $value;
+                }
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * appends values to template variables by reference
+     *
+     * @param  string $tpl_var the template variable name
+     * @param  mixed &$value the referenced value to append
+     * @param  boolean $merge flag if array elements shall be merged
+     *
+     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining
+     */
+    public function appendByRef($tpl_var, &$value, $merge = false) {
+        if ($tpl_var != '' && isset($value)) {
+            if (!isset($this->tpl_vars[$tpl_var])) {
+                $this->tpl_vars[$tpl_var] = new Smarty_Variable();
+            }
+            if (!is_array($this->tpl_vars[$tpl_var]->value)) {
+                settype($this->tpl_vars[$tpl_var]->value, 'array');
+            }
+            if ($merge && is_array($value)) {
+                foreach ($value as $_key => $_val) {
+                    $this->tpl_vars[$tpl_var]->value[$_key] = &$value[$_key];
+                }
+            } else {
+                $this->tpl_vars[$tpl_var]->value[] = &$value;
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Returns a single or all template variables
+     *
+     * @param  string $varname variable name or null
+     * @param  object $_ptr optional pointer to data object
+     * @param  boolean $search_parents include parent templates?
+     *
+     * @return string  variable value or or array of variables
+     */
+    public function getTemplateVars($varname = null, $_ptr = null, $search_parents = true) {
+        if (isset($varname)) {
+            $_var = $this->getVariable($varname, $_ptr, $search_parents, false);
+            if (is_object($_var)) {
+                return $_var->value;
+            } else {
+                return null;
+            }
+        } else {
+            $_result = array();
+            if ($_ptr === null) {
+                $_ptr = $this;
+            }
+            while ($_ptr !== null) {
+                foreach ($_ptr->tpl_vars AS $key => $var) {
+                    if (!array_key_exists($key, $_result)) {
+                        $_result[$key] = $var->value;
+                    }
+                }
+                // not found, try at parent
+                if ($search_parents) {
+                    $_ptr = $_ptr->parent;
+                } else {
+                    $_ptr = null;
+                }
+            }
+            if ($search_parents && isset(Smarty::$global_tpl_vars)) {
+                foreach (Smarty::$global_tpl_vars AS $key => $var) {
+                    if (!array_key_exists($key, $_result)) {
+                        $_result[$key] = $var->value;
+                    }
+                }
+            }
+
+            return $_result;
+        }
+    }
+
+    /**
+     * clear the given assigned template variable.
+     *
+     * @param  string|array $tpl_var the template variable(s) to clear
+     *
+     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining
+     */
+    public function clearAssign($tpl_var) {
+        if (is_array($tpl_var)) {
+            foreach ($tpl_var as $curr_var) {
+                unset($this->tpl_vars[$curr_var]);
+            }
+        } else {
+            unset($this->tpl_vars[$tpl_var]);
+        }
+
+        return $this;
+    }
+
+    /**
+     * clear all the assigned template variables.
+     *
+     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining
+     */
+    public function clearAllAssign() {
+        $this->tpl_vars = array();
+
+        return $this;
+    }
+
+    /**
+     * load a config file, optionally load just selected sections
+     *
+     * @param  string $config_file filename
+     * @param  mixed $sections array of section names, single section or null
+     *
+     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining
+     */
+    public function configLoad($config_file, $sections = null) {
+        // load Config class
+        Smarty_Internal_Extension_Config::configLoad($this, $config_file, $sections);
+        return $this;
+    }
+
+    /**
+     * gets the object of a Smarty variable
+     *
+     * @param  string $variable the name of the Smarty variable
+     * @param  object $_ptr optional pointer to data object
+     * @param  boolean $search_parents search also in parent data
+     * @param bool $error_enable
+     *
+     * @return object  the object of the variable
+     */
+    public function getVariable($variable, $_ptr = null, $search_parents = true, $error_enable = true) {
+        if ($_ptr === null) {
+            $_ptr = $this;
+        }
+        while ($_ptr !== null) {
+            if (isset($_ptr->tpl_vars[$variable])) {
+                // found it, return it
+                return $_ptr->tpl_vars[$variable];
+            }
+            // not found, try at parent
+            if ($search_parents) {
+                $_ptr = $_ptr->parent;
+            } else {
+                $_ptr = null;
+            }
+        }
+        if (isset(Smarty::$global_tpl_vars[$variable])) {
+            // found it, return it
+            return Smarty::$global_tpl_vars[$variable];
+        }
+        $smarty = isset($this->smarty) ? $this->smarty : $this;
+        if ($smarty->error_unassigned && $error_enable) {
+            // force a notice
+            $x = $$variable;
+        }
+
+        return new Smarty_Undefined_Variable;
+    }
+
+    /**
+     * gets  a config variable
+     *
+     * @param  string $variable the name of the config variable
+     * @param bool $error_enable
+     *
+     * @return mixed  the value of the config variable
+     */
+    public function getConfigVariable($variable, $error_enable = true) {
+        return Smarty_Internal_Extension_Config::getConfigVariable($this, $variable, $error_enable = true);
+    }
+
+    /**
+     * Returns a single or all config variables
+     *
+     * @param  string $varname variable name or null
+     * @param bool $search_parents
+     *
+     * @return string variable value or or array of variables
+     */
+    public function getConfigVars($varname = null, $search_parents = true) {
+        return Smarty_Internal_Extension_Config::getConfigVars($this, $varname, $search_parents);
+    }
+
+    /**
+     * Deassigns a single or all config variables
+     *
+     * @param  string $varname variable name or null
+     *
+     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining
+     */
+    public function clearConfig($varname = null) {
+        return Smarty_Internal_Extension_Config::clearConfig($this, $varname);
+    }
+
+    /**
+     * gets  a stream variable
+     *
+     * @param  string $variable the stream of the variable
+     *
+     * @throws SmartyException
+     * @return mixed  the value of the stream variable
+     */
+    public function getStreamVariable($variable) {
+        $_result = '';
+        $fp = fopen($variable, 'r+');
+        if ($fp) {
+            while (!feof($fp) && ($current_line = fgets($fp)) !== false) {
+                $_result .= $current_line;
+            }
+            fclose($fp);
+
+            return $_result;
+        }
+        $smarty = isset($this->smarty) ? $this->smarty : $this;
+        if ($smarty->error_unassigned) {
+            throw new SmartyException('Undefined stream variable "' . $variable . '"');
+        } else {
+            return null;
+        }
+    }
+}