Introduce fullcalendar and jquery-qtip2.
Add fireman_availabilities model.
Remove useless check on request type.
Rollback to vendored version of fullcalendar
Add basic planning for one fireman.

Lack of validations and style but the basis is here.
Move JSON events list generation to view.
Enhance style and javascript code.
Fix timezone problems and add checks on date.
Merge branch 'github.master' into availability
Fix fireman_availability destroy check.
Add link to planning on fireman page.
Disable planning for inactive firemen.
Add availabilities statistics.
Rename by_formation planning to by_training.
Shorter URL for plannings.
Improve form for plannings statistics.
Add 5 most and less occupied hours.
Use when/case rather than else(if).
Rename planning#type to planning#show.
Standardize plannings actions parameters.