Move backend jQuery plugins to dedicated subdirectory.

From now on, we'll keep jQuery plugins required by the backend in
/templates/2k11/admin/js/ (as well as other vendor JS like e.g.
Modernizr).

include/admin/tpl/out_stack_loop.tpl

@@ -88,7 +88,7 @@
     {/if}
     {if $ctype == 'sequence'}
         {if !$sequencejs_output}
-            <script src="{serendipity_getFile file='dragdrop.js'}"></script>
+        <script src="{serendipity_getFile file="admin/js/dragdrop.js"}"></script>
         {/if}
         <fieldset>
             <legend><span>{$cname}{if $cdesc != ''} <span>{$cdesc}</span>{/if}</span></legend>

include/admin/tpl/plugins.inc.tpl

@@ -120,9 +120,9 @@
     {/if}
     <h2>{$CONST.BELOW_IS_A_LIST_OF_INSTALLED_PLUGINS}</h2>
     {if $eyecandy}
-    <script src="{serendipity_getFile file="admin/jquery.autoscroll.js"}"></script>
-    <script src="{serendipity_getFile file="admin/jquery.sortable.js"}"></script>
-    <script src="{serendipity_getFile file="admin/dragdrop.js"}"></script>
+    <script src="{serendipity_getFile file="admin/js/jquery.autoscroll.js"}"></script>
+    <script src="{serendipity_getFile file="admin/js/jquery.sortable.js"}"></script>
+    <script src="{serendipity_getFile file="admin/js/dragdrop.js"}"></script>
     {/if}
     <section id="pluginlist_sidebar">
         <h3>{$CONST.SIDEBAR_PLUGINS}</h3>

include/admin/tpl/templates.inc.tpl

@@ -26,7 +26,7 @@
 <section id="template_select">
     <h2>{$CONST.SELECT_TEMPLATE}</h2>
 
-    <script src="{serendipity_getFile file='admin/jquery.syncheight.js'}"></script>
+    <script src="{serendipity_getFile file='admin/js/jquery.syncheight.js'}"></script>
 
     <ul class="plainList clearfix">
     {foreach $templates as $template=>$info}

templates/2k11/admin/media_choose.tpl

@@ -47,7 +47,7 @@
             display: block;
         } 
     </style>
-    <script src="{serendipity_getFile file='dragdrop.js'}" ></script>
+    <script src="{serendipity_getFile file="admin/js/dragdrop.js"}"></script>
     <script src="{serendipity_getFile file='admin/imgedit.js'}" ></script>
 {/if}
     <script src="{serendipity_getFile file='YahooUI/treeview/YAHOO.js'}"></script>

templates/2k11/admin/media_pane.tpl

@@ -2,7 +2,7 @@
 {* jQuery: No *}
 
 <script src="{serendipity_getFile file='admin/admin_scripts.js'}"></script>
-<script src="{serendipity_getFile file='admin/jquery.syncheight.js'}"></script>
+<script src="{serendipity_getFile file='admin/js/jquery.syncheight.js'}"></script>
 
 <h2>{$CONST.FIND_MEDIA}</h2>