Fix relation between sharing and master
Merge branch 'master' into sharing
Merge branch 'master' into sharing
Merge branch 'master' into sharing
Merge branch 'master' into sharing
Merge branch 'master' into sharing

Conflicts:
	app/models/rb_story.rb
	features/step_definitions/_given_steps.rb
Merge branch 'master' into sharing
Merge branch 'master' into sharing
Merge branch 'master' into sharing

Conflicts:
	features/step_definitions/_given_steps.rb
	features/step_definitions/_when_steps.rb
Merge branch 'master' into sharing
Merge branch 'master' into sharing

Conflicts:
	features/step_definitions/helpers.rb
Merge branch 'master' into sharing
Merge branch 'master' into sharing
repair some merge conflict accidents; make impediment tests work again
fix some whitespace to ease up merging
Merge pull request #545 from patrickatamaniuk/sharing-integration

Sharing fixups
start some pbl view tests (sharing)

work out basic product backlog sharing scenarios
check for menu and dnd options (sharing)
Fix PBL drop target disable/enable handling for Sprint backlogs (versions)
disable Product backlog as drop target if the dragged story is not in self or a descendant of the project
hack on tests (sharing)