Update notes for submitted changes

* Check whether mimetype is empty or not
* Contacts: Fix the "Remove photo" doesn't work issue
* Contacts: "Add new" will disappear
* Contacts: Join the current contact with the selected contact
* Contacts: The message will disappear after switching to landscape
* Contacts: Context menu display incompletely
* Contacts: Contacts crash when tap "Tag" again
* Contact: Phone crash when turn on airplane mode
* Contact: Phone crash when save a contact after switch the account
* Contacts: will pop up "Unfortunately, contact has stopped.".