Improve handling of multiple directory arguments

Created by: cpmsmith

1: Given a database:

20   /foobar
10   /foo/bar

Executing j foo bar, or jc bar from within /foo would both incorrectly match /foobar instead of the correct child directory /foo/bar.

2: Given a database:

20   /foo/bar/baz
10   /foo/bar

Executing the same commands would both match /foo/bar/baz.

Also, fuzzy "last resort" matches were previously prioritized over non-consecutive matches, which they shouldn't have been.