8.2.0

FIXES:
BootReceiver.java:
* Reverted the 24-hour format to avoid manually setting the AM_PM of
Calendar instance, which is prone to bugs when not checked properly
* Removed the intent's Extra, and handle the AlarmManager's interval
inside Alarm class
Alarm.java:
* Reverted to 24-hours format
* completely handled the 15 minutes time lapse here, removing the need
for BroadcastReceiver's intent flags
* Implemented own SF application context for more code readability