Fixing current tests

fixed spec/models/signature_spec.rb
fixed spec/models/idea_spec.rb
fixed spec/controllers/signatures_controller_spec.rb
fixed spec/controllers/pages_controller_spec.rb (had to remove/comment a lot of code from app/controllers/pages_controller.rb)

![QCou](https://f.cloud.github.com/assets/1472617/32152/2960247e-4ff0-11e2-8eab-cb00314aaeef.png)