add view of code emphasizing what it does, leaving out noise

Created by: ijt

Sometimes there is so much code devoted to error handling, logging and tracing that it's no longer clear what the code mainly does. In situations like these, it would be useful if Sourcegraph would provide a view of the code that left out the non-essentials. It would probably be possible to implement something like this using Rijnard's comby (structural) search and replace.

CC @beyang, @christinaforney