Merge pull request #105 from joanrm20/fallback-mode

Maua client new user answer response.
Merge pull request #106 from joanrm20/fallback-mode

Add new way to check decimal values.
Fix the cookie deletion in Safari

Change the cookie deletion method, use cookieStore.remove instead of
delete $cookies['cookie_id'].
Merge pull request #107 from mlopez-firstfactory/fallback-mode

Fix the cookie deletion in Safari
Remove hasExplanation parameter from all directives js and html.
*Add new property 'hasExplanation' which belongs and it's pre calculate from the practice service to validate if an answer
has explanation or not.
Add new validation to show answer panel analytics just once the 'total answered' it's bigger than 100.
Add new fraction entry logic.

*This explanation validation was being calculated at runtime by a function, which have less performance than have the value already calculate once it gets into the directive.
Merge branch 'fallback-mode' of https://github.com/grockit-test-prep/maua into fallback-mode