Add team colors to the Team model

[jbholden]

As mentioned in #76, the team colors should be added to the team model. I have been making a few updates to the enter picks page and would like to have the colors available.

As a starting point, I found this site, which gives team colors for each team. http://dynasties.operationsports.com/team-colors.php?sport=ncaa

We might want to make some adjustments though. For example, the Georgia Tech color looks a little too yellow. I think it should be more gold.

A few questions

• what should the Team color fields be called? (primary_color, secondary_color)?
• how do we decide which colors are primary and secondary (i.e. which should be font color and which should be background color?)

[jbholden]

A comment on the above website (http://dynasties.operationsports.com) says that the tables are free to use, but if we post them on another website to please give them credit. We aren't actually posting these tables on our website, so I think we are ok to use them. I'm not sure if we need to mention this website or not somewhere on our site.

I'm creating a script to just parse the html to get the colors.