[FIX] login: Cope with strange edge case in IE where the $_SESSION['loginfrom'] is the non-sefurl url, even though sefurl is enabled, leading to a 403 error when the page= param ends up being empty but still on the request

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52256 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] trackers: handleClone action for user selector fields, set to current user when cloning items if autoassign is used so the current user becomes the owner or modifier (only used by customised sites, e.g. cartograf)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52258 b456876b-0849-0410-b77d-98878d47e9d5
[ENH] categories: Add new param hideEmpty to categories module to avoid showing empty categories

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/13.x@52259 b456876b-0849-0410-b77d-98878d47e9d5
[MRG] Automatic merge, branches/13.x 52253 to 52259

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@52261 b456876b-0849-0410-b77d-98878d47e9d5
[ENH] Always include the URL in the index

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@52263 b456876b-0849-0410-b77d-98878d47e9d5