Remove left-over `require 'console'`
Change `markers?.length` into `markers.length`

The existence check is no longer needed, since `injectHints` now always
returns an array: Where it before returned `undefined`, it now returns an
empty array.
Minor clean ups
Merge branch 'develop' into cleanup

Conflicts:
	extension/packages/find.coffee
Merge pull request #148 from lydell/cleanup

Cleanup