add invoker to Gemfile.
add invoker configuration file.
add test-mode solr to invoker.
Merge pull request #944 from ontohub/add_invoker

Add invoker
updatet rails to 3.2.19
fix public repo scope
Merge pull request #948 from ontohub/hotfix-rails_update_to_3.2.19

updatet rails to 3.2.19
Merge pull request #949 from ontohub/fix-repository_list_building

fix public repo scope
Merge branch 'staging' into 641-git_mv_handling

Conflicts:
	Gemfile.lock
	app/models/ontology_version.rb
	config/settings.yml
	test/factories/ontology_version.rb