Revert update of OpenLayers (in r49444) back to version 2.12. The ModifyFeature control has changed significantly and no longer works before. Hope to find a better fix after release of 12.1

git-svn-id: file:///var/local/code.tiki.org/tikisvn/branches/12.x@50369 b456876b-0849-0410-b77d-98878d47e9d5
[MRG] Automatic merge, branches/12.x 50367 to 50369

git-svn-id: file:///var/local/code.tiki.org/tikisvn/trunk@50370 b456876b-0849-0410-b77d-98878d47e9d5