Fix e2e tests #131.

Fix #131 
- Added class jumbotron for `__foundation.html`. Search for `awesomething` repeat in body instead of `techEl`
- Made `protractor` depends on `watch` & `protractor:dist` depends on `build`, added gulp sync to ensure protractor starts before building & preprocessing finished.

In my machine I actually had to remove gulp cache at imagemin to make gulp builds pass, but I still keep it in this commit, seems like other machine has no issue with that.