Provide a way to have users connect nicknames with reddit accounts

[fastfinge]

Allowing users to connect there nick to there reddit account, when there IRC nick and reddit nick are not the same, would provide a bunch of advantages. First of all, .karma would return there real reddit karma, rather than usually the karma of some other Reddit user. Secondly, if a mod bans someone from IRC, it would be nice to look up what Reddit accounts they're associated with, to perhaps take action on the sub as well.

The way I'd propose doing this:

1. Have a .connect command. When the user sends this command, gonzobot private messages her with an oAuth link from reddit, so she can prove she owns the account she's connecting.

2. Change .karma so it checks to see if the nickname has a reddit account connected. If so, return the karma from that account. If the nickname is given with a /u/ prefix, instead assume that the karma of that exact reddit user is wanted.

3. Eventually, other super cool features could be added. For example, chan ops could set gonzobot to op other mods of the sub there channel is associated with, once they connect there accounts.

Of course, the .connect and other features should probably only be enabled for nicknames that have been set up with nickserv, for obvious reasons.