Dynamically create the test for the saucelabs task
Merge pull request #3156 from LaurentGoderre/v4.0-dynamic-tests

Dynamically create the test for the saucelabs task
Corrected mime type for svg image
Merge pull request #3165 from fbernard2/v4.0

Corrected mime type for svg image
Sesssion: initial rough port of 3.1 plugin

Exposes plugin keepalive and inactivity checks via the
`keepalive.wb-session-timeout` and `inactivity.wb-session-timeout`
events.