Better compressed images, and using progressive download, for better scores on webpagetest.org

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48117 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Prevent fatal db error because  which is used to construct query conflicts with categories 

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48119 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Tracker status buttons not working correctly (causes visible error if not admin) when filter is array

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48122 b456876b-0849-0410-b77d-98878d47e9d5
changing expires for modules and plugins from 10 years to 1 month, as discussed on the mailing list

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48125 b456876b-0849-0410-b77d-98878d47e9d5
[MOD] Activating ExpiresDefault by default in _htaccess because the vast majority of sites want this. However, changed default value from 6 months to 1 month. Also added a note for developers.

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48127 b456876b-0849-0410-b77d-98878d47e9d5
[FIX] Do not even show the category name or anything in it in category plugin if user has no perm to view category in listing

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@48128 b456876b-0849-0410-b77d-98878d47e9d5
[MRG] Automatic merge, branches/12.x 48115 to 48128

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@48130 b456876b-0849-0410-b77d-98878d47e9d5