Change 'set item' to 'set item to', change 'get item' to 'item'.  Move 'if' block from 'Control' to 'Logic' category.  Rename 'Control' to 'Loops'.  Fix language selector in Code.  Fix report of number of tests in unit tests.

R=spertus@google.com

Review URL: https://codereview.appspot.com/12078043

git-svn-id: http://blockly.googlecode.com/svn/trunk@1162 c400ca83-b69d-9dd7-9705-49c6b8615e23