3661: Added buttons for Copy and Move to the general #show page, showing them if the model class #goes_in_projects?
3661: make existing tests pass
3661: Add a new test that ensures that the new "Copy to project" button works for collections
3661: tentative implementation of Capybara "best practice" of using that class's reset_sessions! in the teardown
3661: removed useless method to wrong project
(fix from last commit)
3661: add centralized method for defining whether an object can be copied to a project
3661: proposed change of the selection javascript to use the new copies_to_projects? class method on Group
Merge branch 'master' into 3661-copy-move-from-show

Conflicts:
	apps/workbench/app/assets/javascripts/selection.js.erb
	apps/workbench/test/integration/collections_test.rb
3661: visual bug fix: button should be a link
Merge branch 'master' into 3661-copy-move-from-show
Merge branch '3661-copy-move-from-show' refs #3661