admin_menu 5.x-1.2

If you are upgrading from a previous version, please read the current README.txt.

Changes since last version:
#176969 by smk-ka: Fixed performance issues with path(auto) module by introducing a menu cache for admin_menu.
#179648 by sun: Inject admin_menu into theme. Fixes several CSS bugs in various themes and also activation of admin_menu immediately after installation.
#191213 by Standard: Fixed block info shouldn't contain the word "block".
#187816 by sun: Fixed "Add" not translatable.
#186218 by sun: Fixed admin menu icon too big in Safari.
#182563 by sun: Fixed wrong datatype for array_search in _admin_menu_get_children().
#183496 by sun: Fixed invalid argument supplied for foreach in admin_menu_copy_items().