closes #51
Add to monticello button is only shown if the project is not already in monticello
Merge branch 'dev' of https://github.com/SWTI2014/SWTI2014-Project-04 into dev

Conflicts:
	packages/SHC-Core.package/SHCProjectWindow.class/instance/update.st
	packages/SHC-Core.package/SHCProjectWindow.class/methodProperties.json
	packages/SHC-Core.package/monticello.meta/version