WIP - update smoking controllers / models
Update gems
Merge branch 'master' of github.com:loed-idzinga/lifefire into rebuild-models-controllers
Update gemfile
Replace model / controller code

- made use of concerns
- Remove unnassesary code from model
- Add helper for label
- Remove vars from analysis controller
- Extend User model
Add burned_calories to DB
Change graphical table for smoke
Update sports form
Add before_save filter for burned calories
Add sports to user
Set populair sports on index
Some styling
Add methods for calculation sport burned calories
Add methods in sport_overview view
Merge pull request #3 from loed-idzinga/rebuild-models-controllers

Rebuild models controllers