Fixed typo in feature description. Merged two background steps since the last one did not have any actions that could be done manually. Removed assertions from a "given" (login) step. We already extensively test logging in. If this extension needs login tests, they should go to a separate feature file. Moved methods from steps file to page file, following page object pattern. Change-Id: Ic5250970362718f5ed887c9ac8fd56948724b210
Please see https://github.com/wikimedia/qa-browsertests for instructions on how to run tests.