Implement Fuzzy String Searching for the ;division Command

[aryker]

Currently, Flick only assigns a division if the argument provided with the ;division command matches the Discord role name for that division exactly. This has caused a bit of difficulty for some students trying to assign themselves to a division.

Implement fuzzy string searching so that Flick is more tolerant of typos and slight mismatches in these arguments (e.g. robotops vs. Robot Ops).

In addition, we should support a few alternate strings that match to these roles that people might enter as arguments to this command. For example:

• "Public Relations" = "PR"
• "Programming" = "Programming/Electrical"
• "Electrical" = "Programming/Electrical"
• "Information Technology" = "IT"
• "Robot Operations" = "Robot Ops"
• "Mechanical" = "Robot Ops"

[ralsei]

This was half-solved with e8acc73, but it doesn't include the alternate strings stuffs.
That'll probably require me to hard-code a list of divisions in config.yaml. I'm not complaining, since that actually makes the code simpler, but whatever.