Convert specs to RSpec 2.99.0 syntax with Transpec

This conversion is done by Transpec 2.2.0 with the following command:
    transpec

* 1 conversion
    from: describe 'some controller' { }
      to: describe 'some controller', :type => :controller { }

* 1 conversion
    from: describe 'some request' { }
      to: describe 'some request', :type => :request { }

See also: https://github.com/yujinakayama/transpec#supported-conversions
Rebuilt Gemfile.lock file; Upgraded rspec-rails to 3.0.0