The user seems to enter sometimes paths with quotes and sometimes add spaces which lead to failure of Backup, Restore or Maintenance utility.
Changes:
- Added a note in help string `Note: Don't add quote(s) or space(s) before or after the path.`
- Remove whitespace before/after the value before it gets saved.
Please find attached patch and review.
I wonder if the more appropriate fix here would be to add a new setting type (perhaps two, one for directory and one for file), which is rendered with a browse button in the prefs panel, and includes real validation.
Stripping spaces and warning about quotes seems like it's just kicking the basic problem down the road a few feet.
