Add isotope, categories for announcement page, sort for announcement

app/assets/javascripts/new_admin.js

@@ -7,6 +7,7 @@
 //= require jquery
 //= require jquery_ujs
 //= require bootstrap
+//= require jquery.isotope.min
 //= require jquery.tinyscrollbar.min
 //= require orbit-1.0
 //= require tinymce-jquery