Add support for (explicit) service intents.
Add support for setting flags for intents.
Add support for setting multiple categories for intents.
Add ability for Gadgetbridge to wake the Android device and leave the
lock screen to start activities when it is sleeping. A new activity
'WakeActivity' is used for this. (Must use 'trusted device' in Android)
Add dismiss-button to 'display over other apps' permission pop up.
Bangle.js can send "gadgetbridge" as package info to accomodate the
different GB build variants/flavours.
Use only getContext() and not getApplicationContext() when executing
the intents.
