* move old brand icons to piwik icons
* update submodule
* fix some tests
* update submodule
* fix another test
* Updates screenshots
* update UI test screenshots
* update system test files
* these images are png with a wrong file extention
* converted all remaining (non animated) GIFs to PNG
* replaced .gif with .png
* jpg to png | deleted plugins/Live/images/visitor_profile_background.jpg
* changed jpg in templates
* replaced favicon.ico with real multisize ico