Implement contact form
Attachments! :paperclip:
Merge pull request #1007 from loomio/feature/contact-form

[QA done] Implement contact form
Merge branch 'master' of github.com:loomio/loomio into feature/file-upload

Conflicts:
	app/models/permitted_params.rb
Merge pull request #893 from loomio/feature/file-upload

[Ready once the tests pass] File Upload
Merge branch 'master' into limit-inbox-max-discussions
lookin good