ui: Implement "enable canned responses" config option

This patch removes the selection of canned responses as well as the canned
responses navigation page from the ui when the canned responses feature is
disabled.

include/class.config.php

@@ -214,6 +214,10 @@ class OsticketConfig extends Config {
         return ($this->get('enable_kb') && FAQ::countPublishedFAQs());
     }
 
+    function isCannedResponseEnabled() {
+        return $this->get('enable_premade');
+    }
+
     function getVersion() {
         return THIS_VERSION;
     }

include/class.nav.php

@@ -125,6 +125,7 @@ class StaffNav {
     }
 
     function getSubMenus(){ //Private.
+        global $cfg;
 
         $staff = $this->staff;
         $submenus=array();
@@ -163,7 +164,7 @@ class StaffNav {
                     if($staff) {
                         if($staff->canManageFAQ())
                             $subnav[]=array('desc'=>__('Categories'),'href'=>'categories.php','iconclass'=>'faq-categories');
-                        if($staff->canManageCannedResponses())
+                        if ($cfg->isCannedResponseEnabled() && $staff->canManageCannedResponses())
                             $subnav[]=array('desc'=>__('Canned Responses'),'href'=>'canned.php','iconclass'=>'canned');
                     }
                    break;

include/staff/ticket-view.inc.php

@@ -534,6 +534,7 @@ $tcount+= $ticket->getNumNotes();
                     <label><strong><?php echo __('Response');?>:</strong></label>
                 </td>
                 <td>
+<?php if ($cfg->isCannedResponseEnabled()) { ?>
                     <select id="cannedResp" name="cannedResp">
                         <option value="0" selected="selected"><?php echo __('Select a canned response');?></option>
                         <option value='original'><?php echo __('Original Message'); ?></option>
@@ -548,7 +549,7 @@ $tcount+= $ticket->getNumNotes();
                         ?>
                     </select>
                     <br>
-                    <?php
+<?php } # endif (canned-resonse-enabled)
                     $signature = '';
                     switch ($thisstaff->getDefaultSignatureType()) {
                     case 'dept':

scp/canned.php

@@ -17,7 +17,8 @@ require('staff.inc.php');
 include_once(INCLUDE_DIR.'class.canned.php');
 
 /* check permission */
-if(!$thisstaff || !$thisstaff->canManageCannedResponses()) {
+if(!$thisstaff || !$thisstaff->canManageCannedResponses()
+        || !$cfg->isCannedResponseEnabled()) {
     header('Location: kb.php');
     exit;
 }