In host's edit page, show the source for the value of puppet class parameters.
Add test to check for element's value in Classification::ClassParam
Merge remote-tracking branch 'upstream/develop' into topic/class_param_source

Need to get latest code from development branch
When showing a parameter's value's source, show the source's name. Changes are made to all models that have parameters. OS, location, organization, domain, and hostgroup.
Fix unit test for parameter source value. Fix string formatting in additional info popup for parameters.
Merge branch 'topic/class_param_source' of https://github.com/breakfastattiffs/foreman into topic/class_param_source

Conflicts:
	app/helpers/common_parameters_helper.rb
	app/models/host/managed.rb
	app/models/hostgroup.rb