Update to latest version of rspec-rails (2.13.2)
Configure RSpec to run specs in random order
Fix order-dependent test failure

Stratify displays a graph for each collector. view_graphs_spec.rb needs
to ensure that the collector is registered, in order to guarantee that
the graph for that collector will be displayed.
Update to latest version of mocha (0.14.0)
Update to Rails 3.2.13
Alignment
Clarify comment in Gemfile
Declare kaminari version dependency
Declare rspec-rails version dependency
Update to latest version of faker (1.1.2)
Alignment
Update to latest version of database_cleaner (1.0.1)
Update Guardfile

  - Remove duplication
  - Use latest recommended setup from guard-rspec README:
    https://github.com/guard/guard-rspec#typical-rails-app
Update to latest version of rb-fsevent (0.9.3)
Update to latest version of guard-rspec & guard-spork
Update guard-spork settings in Guardfile

Use latest recommended setup from guard-spork README:
https://github.com/guard/guard-spork/blob/bb25f86a39/README.md#rails-app
Declare mocha version dependency
Update to latest version of spork (0.9.2)
Update to latest version of factory_girl_rails (4.2.1)

  - Update gem
  - Update code to use new syntax required by the latest gem
Restore factories for sample data

Restore the factories that were (wrongly) removed in eea9aea. These
factories were removed because the tests don't use them. However, we
*do* use them to generate sample data. So:

  - Add them back
  - Update them to use the new syntax required by the latest version of
    factory_girl