ISSUE-98 use request class
further fix for displaying when there are no products either because alpha filter returns no results or invalid cPath
ISSUE-98 updatinf some request stuff
ISSUE-97 fix advanced search when no results returned
ISSUE-104 Define Pages cannot switch between languages in the admin

remove legacy language code
ISSUE-97 oops, incorrect method call
ISSUE-107 fix language change not preserving other get parameters
ISSUE-107 fix language change not preserving other get parameters
ISSUE-102 zen_href_link errors on syntax result in && or ?& in Link/URL
ISSUE-103 Empty categories should not have a filter
ISSUE-108 - Products Price Manager needs clarity when deleting Specials and Featured
ISSUE-110 Attributes Controller should never add Attributes when both options_id and values_id are not set
CHANGE-707 - Fix admin url autodetection to accommodate :port suffix in admin urls for local dev setups
ISSUE-98 Admin action classes

re-instate the admin/install check
ISSUE-111 - Classes should extend base
Admin Profiles SQL error when removing all widgets from profiles
further fix for displaying when there are no products either because alpha filter returns no results or invalid cPath