add tests and fix for stylesheets notifications
rename openLiveDevelopmentAndWait

rename openLiveDevelopmentAndWait to waitsForLiveDevelopmentToOpen to
get it consistent with Jasmine.
remove unused tempDir variable
remove DocumentManager.closeAll()

It removes the issue related to temporary test folder.
Files are now being 'reverted' from the dirty state by
closeTestWindow().
Merge pull request #25 from sebaslv/notif-tests-fix

add tests and fix for stylesheets notifications