Get file_manager working via ugly hack
Created by: NilSet
Problem: file_manager app can't go up into parent directories
Solution: trim the leading file:
from the path returned by get_parent_directory
Drawbacks: Doesn't address the fact that something somewhere isn't handling paths with the scheme on them correctly.
TODOs: Find out where the bug really is.
Fixes: #644 (closed)
State: Ready