Undo/redo block variable name changes
Undo/redo editing text fields and such
Move undo/redo to top menu
Merge branch 'master' of https://github.com/waterbearlang/waterbear into 250_undoredo

Conflicts:
	scripts/drag.js
Rebuild
Merge branch 'master' into 250_undoredo

Conflicts:
	javascript.html
	scripts/block.js
	scripts/ui.js
Merge pull request #396 from CelticMinstrel/250_undoredo

Awesome! I was going to suggest moving to the top menu.