Code intelligence status indicator is black when language server is connected

[nicksnyder]

1. Remove any Sourcegraph URLs from your browser extension
2. Go to https://github.com/FiloSottile/mostly-harmless/blob/master/talks/asyncnet/main.go

Browser extension indicator is black, but Go language server is connected (hover tooltips error for this particular file, but I filed a separate issue).

[KattMingMing]

Code intelligence is actually disabled on that file because the icon acts as a toggle. I think a possible fix here is to make it more obvious that the user toggled code intelligence. This could be done by popup text when hovering to more clearly tell the user to click the plug icon to re-enable code intelligence.

[nicksnyder]

code intel status indicator is gone