e2e tests broken in Firefox 35

[laurelnaiad]

Firefox 35, currently latest, has broken Selenium 2.44 (latest). As such, gulp e2e --browser=ff hangs if you have the latest version of Firefox installed.

Prior to release of next Samplestack version, we should work around this or document it, if Selenium build has not been updated by then. Selenium problem is issue http://code.google.com/p/selenium/issues/detail?id=8390.

For now, the workaround is to downgrade Firefox to version 34. Binaries here: https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/34.0

The protractor github project is tracking the selenium problem at https://github.com/angular/protractor/issues/1734.