Inspector filter ignores folders

[seryibaran]

Steps to reproduce:

• Select a torrent that contains folders
• Open "Torrent Inspector" and switch to "Files" tab
• Select "Filter" search box and type a name of a folder

Expected:

The file list should show only the folder with that name (maybe show nested files as well)

Actual result:

The file list becomes empty. Apparently only file names are used in the search, but not folder names.

Effectively filtering does not work for torrents that have many folders with descriptive names, but nondescript file names.

[jeepston]

Submitted pull request on GitHub?