Admin isolation: Copy of admin templates in admin folder.

(Before previous admin templates removal).
Some of css simplification (in admin only currently.


git-svn-id: http://piwigo.org/svn/trunk@2390 68402e56-0260-453c-a942-63ccdbb3a9ee

plugins/admin_advices/default-layout.css

@@ -1,8 +1,8 @@
-.content {
+/*.content {
   list-style-type:none; 
   margin: 0 1em 0 14.5em; 
   padding: 0 0 15px 0;
-}
+} */
 .content h2 {
   font-weight: bold; 
   padding-left: 2em;