Use dot reporter under Windows since spec doesn't handle ANSI color characters due to the fact that tests are executed as an electron app

This reverts commit d310662a.

Revert "wip: update contribution 2"

This reverts commit 0722ad47.

Revert "wip: global update activity"

This reverts commit 3b769612.

Revert "wip: ViewletActivityAction in activity bar"

This reverts commit 95c23d21.

Added xcodeproj and xcworkspace extensions to supported file extensio…

It is possible in the open / activate event cycle that we end up doing a double push of decorator changes to the editor, as both events pending on to the same delayed operation.