libarchive: restore directory modification time when extrating

[bug #697756]
removed unused ui file
error creating 7zip archives for directories without write permission

[bug #651494]
progress and message dialogs: fixed unnecessary word breaking

use WORD_CHAR as wrap mode for labels to not break words if there
is enough space.

[bug #702919]
Use desktop-file-validate if present to avoid distribuiting desktop file with keywords errors

https://bugzilla.gnome.org/show_bug.cgi?id=703876
7zip: fixed file deletion from jar, war, ear archives

[bug #701739]
cannot add files to a subfolder with zip and 7zip archives

[bug #703420]
updated for version 3.8.4