The toolbar subtitle shows information about how many contacts the
current blog is shared with and how many of those are online.

* Remove distinction between "shared with" and "shared by"
* Show all contacts a blog is shared with
* Show online status of contacts in sharing screen

Signed-off-by: goapunk <noobie@goapunks.net>

Signed-off-by: goapunk <noobie@goapunks.net>

Signed-off-by: goapunk <noobie@goapunks.net>

This wasn't as simple as changing the persona in the XML,
because the same layout is used for a post whether reblogged or not.
So the persona needs to be changed programmatically for reblogged posts.
For this, the `AuthorView#setPersona()` method has been made public and
was changed to always set all views into the desired state to support
usage in a RecyclerView.

* TextInputView can resize up to 3 lines again

Signed-off-by: goapunk <noobie@goapunks.net>

* remove the forced hiding in ThreadListActivity as it should no longer be required

Signed-off-by: goapunk <noobie@goapunks.net>

This changes the visibility of some methods, removes unnecessary
abstractions and fixes static import of GroupId constant.

Also add NotNull annotation to classes that were touched