play button is disabled while executing
standardized all loop-based commands
created a command pattern for loading from json
Merge branch 'master' of https://github.com/franklingu/Visual-IDE

Conflicts:
	Visual-IDE/js/app.js
	Visual-IDE/templates/index.html
updated the saving process to match the load.
Merge branch 'master' of https://github.com/franklingu/Visual-IDE