Revert "[www-client/qupzilla] Remove linguas code that only controls installation of small files. Fixes bug #513674."

This reverts commit 38efc00695dd46364af0f99adce98af64bccad86.

Reverted because of policy violation on LINGUAS
www-client/qupzilla: remove unnecessary locales properly, add check for new/removed locales, fix bug #513674

Package-Manager: portage-2.2.10