Revert "Rename library/target to KF5::DAV"

Authored by mlaurent on Feb 9 2020, 8:11 AM.

Description

Revert "Rename library/target to KF5::DAV"

This reverts commit 650654f552d0fed6a5a218929548eba2b8ef2c91.

CCMAIL: winter@kde.org

don't commit this one in release version please