[BUG #7988] also support feedreader and tutorial app

feedreader:
* run 'compile-scss' job along with the following jobs:
  * source-mobile
  * build-mobile

tutorial:
* run 'compile-scss' job along with the following jobs:
   * source
   * source-hybrid
   * source-all
   * build
[BUG #7988] fix glitches
[BUG #7988] add .gitignore for mobile skeleton