Removed cloud foundry module since it is broken
Removal of all Cloud Foundry references in the code and in the poms
Removed most of the cloud foundry stuff from the docs
cherrypicked a01940fac58d397b384b709631921810d95606cd Merge pull request #639 from ahgittin/fix/addChild-with-spec-on-interface onto 0.5
Fix SshMachineLocationTest reference to README file
Significant updates to download page. Better flow, both for noobs and pros, with  links to PGP and SHA1 resources.

Conflicts:
	docs/start/download.md
Tweaked maven anything-url-search field. Removed dup "AND AND" bool modifier.
Source: {Maven|Sonatype} links to anything search, rather than dist search.
added html file extension for the release-notes
Added verify page for checksums and keys
Fix until clause in groovy WebAppIntegrationTest to return boolean