change try rocket color.
Add new margin at the statics panel.
Add question Timing new logic.
Add new style to old rockit button.
Improve service to search inside collections.
Add timing answer percent to answers directives.
remove underscore from the app and replace it by lodash.
Add merge collection method.
Add the question index list

The question index list is now shown once you start a test, it displays
whether you answered correctly, incorrectly or the question wasn't
answered.