Merge UI upgrades to the Maze fram branch to trunk.

git-svn-id: http://blockly.googlecode.com/svn/trunk@853 c400ca83-b69d-9dd7-9705-49c6b8615e23
Here is the non-working Hebrew puzzle.

R=neil.fraser@gmail.com

Review URL: https://codereview.appspot.com/9226045

git-svn-id: http://blockly.googlecode.com/svn/trunk@854 c400ca83-b69d-9dd7-9705-49c6b8615e23
Add missing change to common.js in previous CL.

git-svn-id: http://blockly.googlecode.com/svn/trunk@855 c400ca83-b69d-9dd7-9705-49c6b8615e23
Adding help images:
help_af.png
help_cs.png
help_de.png
help_el.png
help_gl.png
help_hak.png
help_ia.png
help_it.png
help_ja.png
help_ko.png
help_la.png
help_lb.png
help_lv.png
help_mk.png
help_nl.png
help_pl.png

Review URL: https://codereview.appspot.com/9345045

git-svn-id: http://blockly.googlecode.com/svn/trunk@856 c400ca83-b69d-9dd7-9705-49c6b8615e23