Implement Studio Plugins

These plugins are for an activity done in The Studio called "Artist of the Day".   This is an activity where users get to nominate their favorite artist for "Artist of the Day"-- the winner is randomly selected.  Once we choose a winner, we then go on to record that on our website every day.  These commands will aid the room with this activity in several ways, such as: If a user forgets the AOTD, they can do /aotd and it will tell them until it's changed the next time.  It will also record it in the modlog, should the server restart and no one remembers who it was, so we can later record it on the website as well.

Correct spacing / Indents

Indentation refix

Update chat-plugins.js

If a mod + uses /aotd, it wont change it they don't put a target

Kota's requests / then some other minor edits

Slight grammatical error

Fix ending font tags

So, I was testing and I think the client removes all styles when using the span tag.  For example, I tried doing:
<span style="color: blue;">text</span>
And the text just came out as blue.  But then I tested this in an HTML file, and it worked fine.

Squashing other commits.
Merge branch 'patch-15' of https://github.com/panpawn/Pokemon-Showdown into patch-15