Rebrand HackathonManager

[peterkos]

trafficstars

I've been talking with @cbaudouinjr aboht rebranding HM to something a bit easier to talk about and abbreviate in a memorable way. The URL is quite long and it'd be nice if we had a brand to rally on, as it were.

Ideally we'd keep codeRIT fairly removed from the rebrand. My goal here is to have a friendlier name + potentially a logo for HM. Might help add a bit more polish!