Fixes #1743: Add a padrino-gen generator for creating new Helpers
Also refactored the controller generator to use the new helper gen :)
Add a test for the helper generator
Merge pull request #1748 from padrino/implement-helper-generator

Fixes #1743: Add a padrino-gen generator for creating new Helpers
Merge branch 'master' into connection-pool-with-thin

Conflicts:
	padrino-gen/lib/padrino-gen/generators/components/actions.rb