Changes in db to allow thread removal
Fix 'more unread messages than expected' bug
Merge deleteThreads into master
Model methods, controller actions and views for thread deletion
Don't show deleted threads in listing and don't count them in the unread messages box
Redirect user back to message list after deleting message + translations
When a message is appended to a conversation, the recipient gets access to the whole conversation again
Don't allow user to access its own deleted conversations.
Fix bug which stopped user from seeing some messages
Now message replies in conversations are validated
Disallow users to send messages to themselves and hide link which could make that possible
Merge pull request #2 from deivid-rodriguez/master

new messages threads, Borrado de mensajes