Diaspora code review part01

worked on:
* moved js to backbone models
* removed sql fragment
* boolean maps to :reviewed instead of integer
* method clean up
* removed empty helper
* fixed email receptions
* fixed indentation
* added validations to model
* removed non-english translation

open:
* controller violates REST
* make haml translatable
* use stylesheet
* use link helper inside rails
* clean up routes
* create some tests