Modernizr removed

It's not as necessary as it was 2 or 3 years ago. Now we can expect modern browsers.
Updated to Rails 4.1.2.rc1
Trannsitory package to rspec 3
Convert specs to RSpec 2.99.0 syntax with Transpec

This conversion is done by Transpec 2.2.1 with the following command:
    transpec

* 258 conversions
    from: it { should ... }
      to: it { is_expected.to ... }

* 82 conversions
    from: obj.should
      to: expect(obj).to

* 16 conversions
    from: describe 'some model' { }
      to: describe 'some model', :type => :model { }

* 12 conversions
    from: describe 'some controller' { }
      to: describe 'some controller', :type => :controller { }

* 11 conversions
    from: describe 'some routing' { }
      to: describe 'some routing', :type => :routing { }

* 8 conversions
    from: describe 'some helper' { }
      to: describe 'some helper', :type => :helper { }

* 7 conversions
    from: be_false
      to: be_falsey

* 6 conversions
    from: be_true
      to: be_truthy

* 6 conversions
    from: it { should_not ... }
      to: it { is_expected.not_to ... }

* 4 conversions
    from: obj.should_not
      to: expect(obj).not_to

For more details: https://github.com/yujinakayama/transpec#supported-conversions

Signed off by: Rafael Reggiani Manzo <rr.manzo@gmail.com>
Redirect update url to correct controller

CompoundMetricConfigurationController was using update method from
MetricConfigurationController

signed-off-by: Pedro Paulo Vezza Campos <pedro@vezza.com.br>
Missing method update on the compound metric class

signed-off-by: Thiago Kenji Okada <thiago.mast3r@gmail.com>
Added unit tests for the update method

signed-off-by: Pedro Paulo Vezza Campos <pedro@vezza.com.br>
Added acceptance test to Compound Metric edit configuration

signed-off-by: Pedro Paulo Vezza Campos <pedro@vezza.com.br>
Fixes message of successful compound metric update

signed-off-by: Thiago Kenji Okada <thiago.mast3r@gmail.com>
Added missing mock to compound metric configuration

signed-off-by: Pedro Vezza <pedro@vezza.com.br>
Merge pull request #78 from mezuro/broken_compound_update

Broken compound update
jbuilder updated
jquery-rails updated
poltergeist updated
uglifier updated
docile updated
rspec-rails updated
rails updated
Fixing acceptance tests
jbuilder updated