Feature/morning evening q

Implementing daily morning/evening questionnaire
* Abstracted the SchedulerService into a SequenceSchedulerService
* SequenceSchedulerService launches DailySequenceService taking sequence type through intent
* 2 Independent Schedulers are inherit from SequenceSchedulerService -> {Probe,MEQ}SchedulerService
* Those service are launched at boot/parameter update/ pageActivity of corresponding types

Begin and End Questionnaires (implemented in #239) differ in that
* they have persistent notifications
* Corresponding service must be called at questionnaire completion and regularly to catch a change of status  (entering the D-3 time window)