Bug 927999 - Feedback error messages need rewriting in proper English

New strings provided by Matej, consider the blank space before ":" as a
typo.
Bug 929468 - Python fix the way tests use mock_contact.py
Bug 923152 - Group non-latin names on import contacts
Merge pull request #13020 from gitmai/bug-923152-group-non-latin-names-import

Bug 923152 - Group non-latin names on import contacts
Merge pull request #13004 from flodolo/bug927999

Bug 927999 - Feedback error messages need rewriting in proper English, r=arthurcc
Merge pull request #13008 from zacc/bug_929468

Bug 929468 - Python fix the way tests use mock_contact.py
Bug 915584 - [Bluetooth][Contacts] Receiving a contact via bluetooth when the device does not have SD Card flow differs from the expected