Closes #342

No more general disabling of abortOnError
Resolved all *errors* beside language ones  MissingTranslation & ImpliedQuantity
Issue context: #567

Only personal blogs from non-contacts can be removed.
This also adds integration tests that check if blogs can actually be removed.

Closes #579

Adds first translations to source code and sets up transifex config
file. Pull more translations later with:

 cd briar-android
 tx pull --mode=developer

Closes #448