[FIX] steps in sport center tests
small adjustments in models League, Team and PointSystem
Add the League resource  and paths for this in the views
Add the methods for affiliation the teams in a League
Add League controller
Add views of league
Add partials
Add I18n
Add js files to affiliation
Change the routes for affiliation action and others small changes
Add the Affiliations controller and small changes in models
Modify the js files, change form_tag to  form_for and I added I18n