1124978: Adds description field to activation_keys.
Altered file name to fit the existing pattern
Merge pull request #717 from candlepin/csnyder/activation_key_descriptions_1124978

1124978: Adds description field to activation_keys.
autobind by pools
cleanup and let the db filter pools by ID
Fix tests
Expand activation key capabilities

Can specify group of pools and/or list of product ids to carry out a contained autobind as part of the registration with key process.
Also adds the ability to do a straight autobind.