Suppress PHP warnings

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@50761 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] socialnetworks: Make facebook login work better when login_is_email (thanks BSfez)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@50762 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] socialnetworks: Restore validation on registration form for socialnetworks_firstlogin (lost since Tiki 6 xajax removal i think, required refactoring the validation js into registrationlib) Also removed some bad CSS

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@50763 b456876b-0849-0410-b77d-98878d47e9d5
[MRG] Automatic merge, branches/12.x 50745 to 50763

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@50764 b456876b-0849-0410-b77d-98878d47e9d5
[MOD] Allow mailin actions to be loaded through dependency injection

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@50766 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Commited too fast

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@50767 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Missing return statements to confirm execution

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@50768 b456876b-0849-0410-b77d-98878d47e9d5