Add correctness feedback to plane apps.

git-svn-id: http://blockly.googlecode.com/svn/trunk@627 c400ca83-b69d-9dd7-9705-49c6b8615e23
Fix misuse of Blockly.FieldDropdown.svgGroup_ without null check.

Also, while in there, used css to change the display mode rather than
setting the style directly.

BUG=113
TBR=neil.fraser@gmail.com

Review URL: https://codereview.appspot.com/7304066

git-svn-id: http://blockly.googlecode.com/svn/trunk@628 c400ca83-b69d-9dd7-9705-49c6b8615e23
Fix rerendering code in "code" app.

Change render() to renderBlocks() so goog.ui.Component's assertion
is not hit and the blocks rerender for Firefox.

TBR=neil.fraser@gmail.com
BUG=110

Review URL: https://codereview.appspot.com/7307080

git-svn-id: http://blockly.googlecode.com/svn/trunk@629 c400ca83-b69d-9dd7-9705-49c6b8615e23
Make Field a goog.Disposable and ensure subclasses call superClass disposeInternal.

TBR=neil.fraser@gmail.com
BUG=None

Review URL: https://codereview.appspot.com/7307081

git-svn-id: http://blockly.googlecode.com/svn/trunk@630 c400ca83-b69d-9dd7-9705-49c6b8615e23
Made to update the blockly_compressed.

We really need a presubmit check to ensure that the timestamp of
blockly_compressed is the newest of all the source-controlled files.

TBR=neil.fraser@gmail.com
BUG=None

Review URL: https://codereview.appspot.com/7304067

git-svn-id: http://blockly.googlecode.com/svn/trunk@631 c400ca83-b69d-9dd7-9705-49c6b8615e23