Fix "Highlight Procedure" in prcedure call block menu

Change-Id: Ia6c3ad45cc6a3d3cc8da93c1e432a128a8c116a6
Adds closing mutators when user clicks on workspace

Change-Id: If877ff62d6a1e7d21fc8f86a45073989a9328341
typeblocking bugfix

Fixes a type blocking bug where typed statement blocks did not connect properly
to other statement blocks.

Change-Id: I0624e7dbf646246a0de67c363033f578920ecd4e
Adds date modified column to projects list

Change-Id: I23edbfb9d0259620f8f45574e36a3776834473b9
Change multiplication symbol from star to times
Fix long lines

Change-Id: I21c3d7cbab96f593994caa0265af97779441511b
Merge branch 'master' of http://github.com/mit-cml/appinventor-sources