Use spotlight to find chrome

This is much faster than finding in the Applications folder.
Don't reconvert icns icons
Link the chrome executable into the ssb

This way, we don't spawn a "Google Chrome" instance but an own app
instance that can be named via the settings in en.lproj. In the end, the
running app has the name specified upon creation, not "Google Chrome".
Merge pull request #1 from thomasjachmann/master

Merg in fixes from @thomasjachmann