[bp/r52101][FIX] Plus signs in cookie content was being converted to spaces


git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@52102 b456876b-0849-0410-b77d-98878d47e9d5
[bp/r52103][FIX] In IE the timezone is still detected as GMT+x (tested on IE 11) and so display timezone was always UTC when using IE and detection was turned on. This fixes it and also shows timezones in ISO GMT-x instead of POSIX GMT+x for west of Greenwich.


git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@52104 b456876b-0849-0410-b77d-98878d47e9d5