CC-3561: Add button to automatically rescan watched folders.

-done

airtime_mvc/application/controllers/PreferenceController.php

@@ -350,6 +350,15 @@ class PreferenceController extends Zend_Controller_Action
 
         $this->view->subform = $watched_dirs_form->render();
     }
+    
+    public function rescanWatchDirectoryAction()
+    {
+        $dirs = Application_Model_MusicDir::getWatchedDirs();
+        foreach ($dirs as $dir) {
+            $res = Application_Model_MusicDir::addWatchedDir($dir->getDirectory());	
+        }
+        die();
+    }
 
     public function removeWatchDirectoryAction()
     {

airtime_mvc/application/views/scripts/form/preferences_watched_dirs.phtml

@@ -20,6 +20,7 @@
 
         <dt id="watchedFolder-label" class="block-display">
             <label class="required" for="watchedFolder"><?php echo $this->element->getElement('watchedFolder')->getLabel() ?></label>
+            <a href="#" id="watchedFolder-rescan">Rescan</a>
         </dt>
         <dd id="watchedFolder-element" class="block-display">
             <?php echo $this->element->getElement('watchedFolder') ?>

airtime_mvc/public/css/styles.css

@@ -1990,6 +1990,17 @@ label span {
 	line-height:12px;
 	padding:0 10px 1px 10px;
 }
+
+#watched-folder-section a {
+    font-size: 12px;
+}
+
+#watched-folder-section a:hover {
+    text-decoration:none;
+    color:#FF5D1A;
+    cursor:pointer;
+}
+
 #watched-folder-section dd.block-display input[type="button"]:hover {
 	border: 1px solid #242424;
 	background-color: #292929;

airtime_mvc/public/js/airtime/preferences/musicdirs.js

@@ -77,6 +77,10 @@ function setWatchedDirEvents() {
                 setWatchedDirEvents();
             });
     });
+    
+    $('#watchedFolder-rescan').click(function(){
+        $.get("/Preference/rescan-watch-directory", {format: "json"});
+    });
 
     $('.selected-item').find('.ui-icon-close').click(function(){
         if(confirm("Are you sure you want to remove the watched folder?")){