mapedit work

-added search button in toolbar support
-changed js reference
-tweaked search button support
-created missing icons
-fixed overlay hide/show issue
-fixed loading message issue on ie/chrome
-added condition to only ask for confirmation if user will lose data
-fixed issue where deleted overlays would throw error on toggle
-fixed issue with double warnings
-fixed issue with overlay toggle and saving
-added special overlay conditional to write button
-added better overlay count
-added support to delete overlays from collection
-added better reset overlay supporto detect deleted overlays
-tweaked some css changes
-tested in ie, chrome, ff