Use marionette instead of phantom in performance tests.
Add network simulation.
Changed cache tests to 2 seconds.
Merge branch 'tests' into develop
Minor version bump.
Fix certvalidator extension.
Fix Marionette tests.
Add charset conversion error recovery for DOM plugins.
Merge branch 'tests' into develop
Change image compression plugin to use janus-image-worker.
Merge branch 'imgcompression' into develop
Merge branch 'develop'