Fixing source page for A&H.net
Fixing temp file error
Description
	* Deleted Users_uid because of duplication of registered_by

Users
	* Rename User

Api_keys
	* Rename Api_key
	* rename users_UID -> User_UID

SystemLog
	* rename users_UID -> User_UID

Comment
	* rename users_UID -> User_UID

Keyword
	* Added sourceCat for non drupal registries (History Online has no URI for its own fields)