Small style optimization
Merge branch 'master' of github.com:WoltLab/WCF
Added media query for double columned container lists
Bug workaround for (undocumented?) autoload change in PHP 5.3.?

Our local vanilla 5.3.8 always receives classes for autoloading fully-qualified without leading slash (as written in the PHP doc), but a customers 5.3.2-1ubuntu4.18 sometimes receives it with an leading slash. Simple way of handling that, breaks nothing and normally won't affect anything.
Removed obsolete whitespace
wrapped in curly braces
Annoying and pointless
Merge pull request #1129 from PhrozenByte/bug/AutoloadLeadingSlash

Bug workaround for (undocumented?) autoload change in PHP 5.3.?
Small style optimization
Merge branch 'master' of github.com:WoltLab/WCF
Removed AJAX-support for ui.wcfDialog

Additionally WCF.showAJAXDialog() was removed too.
Merge branch 'master' of github.com:WoltLab/WCF
Template listener order is now deterministic

First installed will be the first one to be invoked
Fixes property access because of lazy initialization