Add function "favourite" or "save" the tutor

[segerina]

Add function "favourite" or "save" the tutor, so that pupil can fast find this tutor again.
For example if a pupil found a tutor he or she liked best, the pupil can add that tutor to Favourite list by clicking on the star next to the tutor name or by clicking on the "save" Button next to the tutors name. "Favourite" or "Save" Button can be on tutors profile page or in the schedule matched time or follow tutors name where ever it appears.

[OrkhanHuseynli]

@segerina how can I test my changes without running the whole app?