nodes API updates allowing nodes self-registration
Merge pull request #2881 from iNecas/fort-node-registration

nodes API updates allowing nodes self-registration
Candlepin: Fixed missing code in update
Merge pull request #2884 from daviddavis/temp/20130904115506

Candlepin: Fixed missing code in update
Source code test: Fixing source code error

I found a lot of instances of 'rescue => e' in our code which triggered rubocop
since the e variable wasn't being used. I think it's better to just recommend
'rescue' since it's also the same thing as 'rescue StandardError'.