* [#12] Validation of Team registration
* Added minimum/maximum competitor limits to ContestTemplate and Contest
* [#12] Validation of Team registration
* Added validations for minimum/maximum competitor limits to ContestTemplate and Contest
* [#12] Validation of Team registration
* Added the Team#validate_contest method
* Added the User#join_team method
Merge pull request #30 from sjaveed/mist-12

Validation of Team registration