Implement a team chat box system

[crkellen]

Please fill out this Issue template to the best of your ability!

Type of Issue

• This Issue is a Bug
• This Issue is a Feature Request
• This Issue is a Design Issue/Request

Hint: Design Issues or Requests are changes to existing features, not new ones.

Description of the Issue:

Implement a chatbox which players can talk to their team through. Players cannot talk to the enemy team.

Additional comments or information:

This will require some sort of chat filter I'm sure.