Fix #131
method implemented to change updated_at for translations
Releaf::Content::Node improved

1. filename corrected
2. updated_at setting improved
Releaf::I18nDatabase::Backed cache reload improved
draggable ajaxbox implemented
rspec-rails fixed at 2.99.0
rspec-rails 2.99.0 depreciations fixed
Convert specs to RSpec 2.99.0 syntax with Transpec

This conversion is done by Transpec 2.2.1 with the following command:
    transpec releaf-content/spec/ releaf-core/spec/ releaf-i18n_database/spec/ releaf-permissions/spec/

* 35 conversions
    from: obj.stub(:message)
      to: allow(obj).to receive(:message)

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

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

* 9 conversions
    from: Klass.any_instance.stub(:message)
      to: allow_any_instance_of(Klass).to receive(:message)

* 6 conversions
    from: obj.should_receive(:message)
      to: expect(obj).to receive(:message)

* 2 conversions
    from: expect(collection).to have(n).items
      to: expect(collection.size).to eq(n)

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

* 1 conversion
    from: Klass.any_instance.should_receive(:message)
      to: expect_any_instance_of(Klass).to receive(:message)

* 1 conversion
    from: Klass.any_instance.unstub(:message)
      to: allow_any_instance_of(Klass).to receive(:message).and_call_original

* 1 conversion
    from: obj.should_not_receive(:message)
      to: expect(obj).not_to receive(:message)

For more details: https://github.com/yujinakayama/transpec#supported-conversions
rspec-rails version fixation removed
depreciated rspec issues fixed
depreciation warning for excel matcher fixed
Update Node.valid_node_content_class_names test for rspec3
Fix test
Convert ResourceFinder to class
with_model gem added for model independent class testing
Releaf::ResourceFinder: heavy refactoring
ruby minor version fix removed§
BaseController: block support removed, before_render concern added
Nodes feature spec renamed
BaseController: feature verification refactored