Enable Android conversation features

[Choucroute-melba]

Hi, this is for #423

This PR add the necessary shortcuts to the system and to notifications so Android can enable it's conversation features for QUIK : notifications will be displayed on top, you can define priority convs and you can uses and android's default conversations widget.

I also added a Recipient.getThemedIcon function to get unified icons between notifications, launcher shortcuts and in app view.

This is also a first step for bubbles support, but some more work is needed.

[octoshrimpy]

Thank you so much! going over the code now

[gavine99]

@octoshrimpy fyi, i had to revert the commits in this pr from my local build because it broke notifications for group mms. not sure about single recipient mms or sms - i haven't tested for those.

[octoshrimpy]

@octoshrimpy fyi, i had to revert the commits in this pr from my local build because it broke notifications for group mms. not sure about single recipient mms or sms - i haven't tested for those.

that's no good, I didn't have any problems when testing. I wonder what's up

[gavine99]

a had a quick browse of the logcat and it seemed it was maybe feeding a null image to the notification when a new message arrived. the group mms had 1 recipient with an image associated, and 3 recipients with no image associated.

[Choucroute-melba]

Hi, I made a fix in #445 that I tested in shortcuts but I couldn't test notifications so tell me if there is anything else I can do