[bp/r52022][FIX] structures: Empty $_GET and $_POST as they are used in get_toc and everything gets appended to the links for actions etc, making them fail

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@52026 b456876b-0849-0410-b77d-98878d47e9d5
[bp/r52024][FIX] ajax: Strip get params from ajax referrers as new ones will be added from the params (leading to double question mark issues etc) 
[bp/r52025][FIX] ajax: Split assignment and test to make things clearer (thanks nelsonko)

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@52027 b456876b-0849-0410-b77d-98878d47e9d5
[bp/r51954] Update to ckeditor that needs this coming to 12.x next.
[FIX] wysiwyg: Fix the missing toolbar buttons wish5299.
It seem the ckeditor packages in packagist.org (since v4.3) are the "standard-all" package and previously we have been using the "full" build, and these are now being used by default (even though we specify full zip packages in satis.json...)
Apparently these are actually the same but some of the basic plugins are disabled in "standard-all", so this "fix" adds a pref to restore the plugins we've been using by default.
Thanks Geoff and Nelson for all the testing and feedback!

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@52028 b456876b-0849-0410-b77d-98878d47e9d5