Annotate tests passing in phantomjs

Add @phantomjs to features & scenarios that passed running phantomjs 1.9.7
against ee-flow.wmflabs.org
More tests might pass if run separately, since phantomjs' WebDriver has
a bug that it saves state between runs.

Change-Id: I2fcdea413cbefa4f8a3f7192edfe31d5aff72f96