Added build dependency libqt5xdgiconloader-dev, set
minimum versions
Bumped Standards to 3.9.8, no changes needed
Fixed VCS-Fields, use https and plain /git/
Added Recommends lxqt-globalkeys-l10n
Fixed copyright Format field
Bumped copyright years
Don't install translations
Added translation control to rules
Set CMAKE_BUILD_TYPE=RelWithDebInfo
Exported LC_ALL=C.UTF-8, make builds reproducible
Added hardening options to rules
Fixed .gitignore
Removed Patches, applied upstream
