Merge pull request #175 from pulp/rbarlow-2.1.1-release-notes

Added a spot for 2.1.1 release notes.
947927 - When looking for nested elements in a copy, only check the source
repository, not all of Pulp. By nested elements I mean RPMs in a package group or groups in a package category.
Merge pull request #177 from pulp/jdob-947927

947927 - When looking for nested elements in a copy, only check the sour...
Merge branch 'pulp-2.1'