Update Metrolook

* Backporting changes from master branch.

* Some of the changes should fix issues and also add new features.

* Adds some new settings. Please go to README to see what settings there are.

* Adds more svg images. and adds more images.

* Fixes issues with webkit and chrome and other browsers that use webkit.

Change-Id: If098d79cfb9fe0886550118f242d74fbe2e8de96