Fix embedded RTL text using RTMs.

git-svn-id: http://blockly.googlecode.com/svn/trunk@1690 c400ca83-b69d-9dd7-9705-49c6b8615e23
Swap string quotes in RTL.

git-svn-id: http://blockly.googlecode.com/svn/trunk@1691 c400ca83-b69d-9dd7-9705-49c6b8615e23
Fix horizontal offscreen positioning of RTL bubbles in scrollbar mode.

git-svn-id: http://blockly.googlecode.com/svn/trunk@1692 c400ca83-b69d-9dd7-9705-49c6b8615e23