removeing simple form initializers
Index checklists via JSON. Correct bad namespacing in controller
Fully functionnal checklists#index
Dryer code that only responds to json now
small fixes in apipie and checklist serializer
wip
Ember finally works. Can read explanations.

- Bad rails g ember with old version had js files loaded that lacked
DS.ActiveModelAdapter definitions thus leading to js errors when trying
to retrieve data
Removing useless dashboard spec into rails since there is now ember.js
Remove lasts bits of simple form initializers
First models : tag and item
Now can #mindlink tags os strings to items !
Merge branch 'master' into develop

Conflicts:
	Gemfile.lock
Merge between different tries completed. From checklist to item