The new oouified echo popup makes the tests invalid; this commit
rewrites those tests.
Also by doing this commit we are upgrading to Selenium 1.4.
Change-Id: I26215558768d55be449276c55b4b745c3a458ecb
Also updated other gems, except mediawiki_api (only patch version
update), mediawiki_selenium (only patch version update) and rubocop.
Bug: T112748
Change-Id: I30f8d45a2efb2c4e44927ebb150131e35419b8c8