* Fix outgoing and incoming calls section.
* Use browser caching for css file with cache busting
By allowing the browser to download the css file directly, the browser will automatically cache the file. The `?v=` parameter uses an md5 hash to differentiate changes in the file.
Minor change requests implemented that were forgotten:
- Removed the line between the extension that belong to the user and the other extensions.
- Added the permissions for the tabs so they are not visible yet. "Extensions" and "Calls" are the only ones with the permissions after running app defaults
