Adding Teams#show action.
News| Basic news creation form

Currently only renders a preview of the message rendered from Markdown
Chosen rendering engine is Kramdown
News| WIP| database for news
News| Remove residual artifact from editing
News| Allows to save news_article and to display the feed
Common Code| Add admin page
Adding new and create actions to Teams.
News| Tinkering with the links in the nav_bar
Common Code| Rename function to check if current_player is admin
Common Code| Limit access to the admin Panel
Adding security checks and tests for Teams#new.
Adding Teams#destroy action with tests.
News| Add Draft mode and improve Preview/Edit/Publish cycle
Merge pull request #2 from PaulDib/adding_team_actions

Adding team show, new, create and destroy action.
Clean| Use before_action instead of before_filter
Removing signed_in_player? from TeamsController.
Preventing signed in users from signing up again.
Removing the warning on mass assignment.
Merge pull request #6 from PaulDib/signedin_players_cannot_create_new_players

Preventing signed in users from signing up again.
Clean| Remove long explanatory comments in route.rb