Joshbot 2.0

Re-write of joshbot in Go. I clearly have too much time.

Features

• deletes any message that isn't the word "josh"
• two josh's in a row by the same use is called a "double josh" and is disallowed (deleted)
• "josh" messages and "non josh" messages alike are sent to an API, which is used to populate a react frontend with statistics
• a josh of the week is chosen every Monday at 12:00am PST
• josh messages earn users josh coins
• a josh leaderboard and non josh wall of shame are displayed on the website among other statistics

Proposed Features

• josh coin redeem system