No OP Replies - Part 1

#### If you pull this, remember to change your config file

This will cause DeltaBot to check to see if a comment was written by the submissions author (OP has replied). If they have AND the no_replies_flair is the current flair then it shall be removed.

This is the first step to potentially using this system. The next step would be to have some way to flair submissions older than a particular ages (the easiest being 0 seconds old). This is a bit more complex to add and I don't have too much time right now.

As long as no_replies_flair is set to something unused in the config then this change should do nothing and can sit idly until this is used.

I thought I'd send the pull request now though ... to get the ball rolling.