let hets return all written files.
add pp_xml_name and xml_name and set them

While parsing we set the pp_xml_name and xml_name
to avoid confusion when determining the name ourselves.
fix specs for hets-output paths.
add drop-type support for rake db:migrate:clean

This is needed since we now create Types
in some migrations.
Updated rails to 3.2.17.
add the missing public_r method.
adjust ssh_access_controller for useful errors

The controller should now always return a valid response,
in the sense of communicating with the command-line script.
If an error occurs the json contains the error-information.
add spec to test out the ssh-access controller.
change hets date checking to revision checking.
document the extended postgresql-types method.
Merge pull request #696 from ontohub/fix_rake_db_migrate_clean

add drop-type support for rake db:migrate:clean
Merge branch 'fix_hets_version_checking' into 702-fix_git_clone
Merge pull request #704 from ontohub/fix_hets_version_checking

Change hets date checking to revision checking.
Merge pull request #703 from ontohub/702-fix_git_clone

Repair git clone, fixes #702.
adjust hets path for Mac OS X homebrew compliance.
Merge pull request #711 from ontohub/fix_hets_path_for_homebrew

adjust hets path for Mac OS X homebrew compliance.
Updated Ruby version to 2.1.1.
Merge pull request #712 from ontohub/ruby-2.1.1

Updated Ruby version to 2.1.1.
refactor xml-file questions for rails style.
Merge pull request #695 from ontohub/690-pp_xml_stuff

PP XML Stuff, fixes #690.