[#347] update paperclip gem; change file validations
[#347] small refactoring
[#347] small validation refactoring
Merge branch 'master' into 347-update_paperclip

Conflicts:
	Gemfile.lock
[#347] add application/x-rpm mime type
update deploy sample
Merge pull request #348 from abf/rosa-build:347-update_paperclip
 [#347] update paperclip
Merge pull request #353 from abf/rosa-build:update-deploy
 update sample deploy file
Updated deploy.rb.sample