Fix pending tests and update ZenTest to be compatible with latest rubygems
Remove ZenTest from Gemfile
Remove autotest from Gemfile too, it is not necessary for the app
Require prawn to avoid errors in Cijoe
Require prawn-labels to avoid errors in Cijoe
Merge pull request #36 from suyccom/chequear_tests_almacen

Fix pending tests and update ZenTest to be compatible with latest rubygems