fix seed data
use QuestionCreator inside import:se to also create timeline events
removed unused db/seeds.rb file
update rails
update gems
add rails-erd for development
add comment for site_name setting
update gems
Convert specs to RSpec 2.99.0 syntax with Transpec

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

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

* 72 conversions
    from: == expected
      to: eq(expected)

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

* 21 conversions
    from: -> { }.should
      to: expect { }.to

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

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

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

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

* 2 conversions
    from: describe 'some request' { }
      to: describe 'some request', :type => :request { }

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

* 1 conversion
    from: =~ /pattern/
      to: match(/pattern/)

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

For more details: https://github.com/yujinakayama/transpec#supported-conversions
add node about pundit spec blocking rspec 3
Merge branch 'master' into admin-dashboard
move sidekiq dashboard link to right of page