History and Chat implementation

Bugfixes for this version

• Implemented basic chat #21
• Sanitized Chat Input #28
• Show remaining input length #27
• Disable/Enable sending button to prevent spam #26
• Implemented History #31

Remaining issues on this milestone

• Show history on-screen #33
• Make the chat layout look nicer #17

Additional changes

• Added version number to header strip

Published to onlinecardgame.meteor.com