New shorten.multi plugin (contributed by Miguelon), should replace shorten.bitly ...

git-svn-id: https://ajaxplorer.svn.sourceforge.net/svnroot/ajaxplorer/trunk@3430 3bf36de4-da32-0410-8312-848cfbfe3f7d
Fix background for share page

git-svn-id: https://ajaxplorer.svn.sourceforge.net/svnroot/ajaxplorer/trunk@3431 3bf36de4-da32-0410-8312-848cfbfe3f7d