Added css class div.warning, used for the known issue docs quickfix on M1.
Added release-notes directory and notes for 0.5.0-M2.
Fix docs build: re-add eclipse.include.md

- docs/use/guide/quicksart/eclipse.include.md had been accidentally
  deleted, which caused the jekyll build to fail. This commit
  reinstates that file.
Adds link to release-notes (in download.html)
Release notes list formatting fix.
Easier getting started path on download page.
Also one small optimization for release notes download location on snapshot vs milestone docs build.
Moved eclipse.include.md closer to usage (ide.md) in file hierarchy, to prevent future accidental deletion and repeat of docs build failure.
Add Cassandra Catalog annotation
Cassandra metrics
Fix QpidBroker name in catalog
Add missing AWS EC2 regions
Allow polling of the same attribute name on different JMX objects
Merge pull request #585 from grkvlt/aws-regions

Add missing AWS EC2 regions
Merge pull request #580 from grkvlt/cassandra-update

Add Cassandra Catalog annotation
Merge pull request #586 from aplowe/RUBYREP

Adjusting RubyRep integration test to use a single postgresql server
Merge pull request #582 from jdtoy/master

Docs improvements following M2 release.
RubyRep: Adjusting postgresql test creation script to support RubyRep on postgresql 8.x