Move update method to the coverage main file
Rename CoverageView to CoveragePanelView

Rename the CoverageView to CoveragePanelView to avoid conflict with the
coming status bar view.
Added the pulse statusbar icon
Toggle the statusbar with the status icon
Tint the status icon in the test coverage color
Activate statusbar icon

Only activate the statusbar icon if the statusbar is present
Merge pull request #1 from philipgiuliani/pg-move-to-main-file

Move update methods and add statusbar