Refactor video plugin
This puts the plugin in the standards set by BoxesHelper, improve test coverage and remove an unused view.
Travis build: https://travis-ci.org/rafamanzo/noosfero/builds/127621024
This puts the plugin in the standards set by BoxesHelper, improve test coverage and remove an unused view.
Travis build: https://travis-ci.org/rafamanzo/noosfero/builds/127621024