test integration with other gulp tasks

[gruppjo]

How should the gulp tasks karma and protractor integrate with the other gulp tasks?

• should they be run, when running gulp watch? (not possible right now due lack of browsersync browsersync instead of livereload #228)
• own karma-watch tasks? since gulp karma:auto cannot be forced to do checks when files change, neither re-runs it when app files change.
• when they're run alone, should they perform style-checks etc? on which files?

[MathiasTim]

From my perspective we should be fine for now with having them separated from the other gulp tasks. I think we need some time to figure out how and when we will run the tests.