[#26] Upgrade patch versions of gems.

This is specifically to include Rack security fixes, but also upgrades
other gems at the same time.
[#26] Upgrade minor versions of various gems.

Upgrade the minor versions of the following gems:

- fog
- uglifier
- jquery-rails

and minor versions of the following development gems:

- factory_girl_rails
- foreman
- yard
Merge branch 'enhancement/26-upgrade-gems-inc-rack' into develop