wrong connect icons

!654 (merged) landed the wrong icons:

1. connection-failure.svg should a broken globe, using context-stroke for the slash. It is instead a tor connection icon with a slash.
2. connection-location.svg, using context-stroke for the pin. It is instead has no context-stroke.
3. tor-connect-broken.svg should be a tor connection icon with a slash. It is instead a globe icon with a slash.