Added info style for minimap marker
added info css for minimap marker and encapsulated style info for fileStatus (and added info)
TESTING info
Revert "TESTING info"

This reverts commit d41c50f2eec583f022a3a9ade8b9d1d9e3414d8d.
Merge pull request #705 from dart-lang/minimap-info_marker_style

Minimap info marker style