Ignore QR code results until local QR code is created
* Make scanning only possible after we are "ready" (= our QrCode was created and set).
Signed-off-by: goapunk <noobie@goapunks.net>
Closes#814
See merge request !454
Update all logos
The launcher icons are now in mipmap folders which is the recommended practice, because on a low-res device, the high res drawables are stripped from the app. This is bad when the user decides to show the app icons really big on the launcher and the high-res drawables are not available anymore.
The old launcher icon seemed to have some sort of 3D effect.

Navigation Drawer Old:

Navigation Drawer New:

Closes#828
See merge request !459
Use different notification icons for different features


Closes#795
See merge request !460
Plugins throw exceptions for startup errors
Please review carefully as I don't know much about the code I have touched here.
Closes#285
See merge request !462
Move all unit tests to their modules and remove briar-tests
There are now tests in these modules:
* bramble-api
* bramble-core
* bramble-j2se
* briar-core
* briar-android
In order to run all -core tests together, the following AS run configuration can be used:

Closes#778
See merge request !456
Add sharing information to private group ActionBar subtitle

Closes#646
See merge request !455
Add creator and online information to group member list


Closes#813
See merge request !448
Add sharing info to ForumActivity action bar subtitle
This indirectly does also most of the work for adding the same information to private groups. However, completing this is blocked by !448.

Second part of #646
See merge request !451
Add blog sharing information to toolbar subtitle
This MR introduces a new `SharingController` which is supposed to be used in activities that show blogs, groups and forums. Feedback on this approach is welcome before this is used to add "Shared with" support to other parts of the UI.
The toolbar subtitle shows information about how many contacts the current shareable is shared with and how many of those are online.
So far this is implemented for blogs:

One part of #646
See merge request !447
Fix Sharing Status screens
* Remove distinction between "shared with" and "shared by"
* Show all contacts a blog is shared with
* Show online status of contacts in sharing screen

Closes#810
See merge request !445