Obtaining and displaying backend DB information

[bcoov]

Obtain information from the backend to then display to the interface via the appropriate activity.

Current state:

• Information is obtainable (via working authentication)
• Returned as JSON
• Basic parsing and displaying is done withing MainActivity
  • Thought: should MainActivity be renamed to PlayersActivity?

Goal from this point is to expand this process to teams/leagues/games/etc, and eventually make the displaying of info more robust.

[kyleMeyers]

We can display backend info now. Can be reopened if need be but I do not think so