Implement UX for leaving a group
This MR also includes the creator's part of the UX for dissolving a group since it is almost the same.
Closes#671
See merge request !367
Remove forum content type and change bodies to string
Also removes support for anonymous forum posts.
This MR depends on !360.
Closes#698, #681
See merge request !370
Refactor contact lists, their adapters and items
This was supposed to be a preparation for #678 to make the contacts lists cleaner and easier to re-use for different use-cases. Turns out #678 can't use this work, but it is probably nice to have anyway.
During this work, support for multiple identities has been removed from the various contact lists.
See merge request !363
Implement UX for showing and answering private group invitations
As usual, this MR contains several logically separate commits that could be split out into smaller MRs if desired. It consists of two main parts:
* Showing open invitations in the list of private groups with a snackbar
* Showing invitations and responses in the private conversation
For both parts, the existing code was refactored to allow for a smooth implementation and to leave maintainable code behind.
Closes#707
See merge request !357
ProtocolStateException for client protocols
Methods that implement local actions in a client protocol (for example, accepting an invitation) can throw this exception to indicate that the action wasn't taken because the action isn't applicable to the current state. This can happen if the protocol state machine is updated by an incoming message and the user takes an action before the UI has been updated.
See merge request !368
Disable EmojiTextView software layer rendering when cache is too small
This needs to be tested if it works as intended on several devices.
See merge request !362
Limit scene transition animations to API 23 and above
to work-around [android bug #224270](https://code.google.com/p/android/issues/detail?id=224270).
This is only necessary if the transitioning view might not be available anymore when the exit transition is made.
Closes#686
See merge request !361
Implement UX for creating a private group
This MR allows the user to create a new private group and select contacts to be invited into the group.
There are currently 6 commits starting with some small refactoring for code reuse and making more functionality available in the backend. Each commit could be split up into a dedicated MR if desired.
Closes#661
See merge request !353
