Summary:
Don't use QDBusConnection::ExportAllContents
No need to make connect and receivedPackage public slots (they're are the
parent's already)
Fixes T4975
Test Plan: Rough manual test
Reviewers: #kde_connect, albertvaka
Reviewed By: #kde_connect, albertvaka
Maniphest Tasks: T4975
Differential Revision: https://phabricator.kde.org/D3871
Make the share received notification explicitly internal.
Fix runtime warning about how QUrl cannot be exported.
Notify about all shares, not exclusively transferred files.
Had to instance QUrl using fromLocalFile since our
kconfig/KGlobalSettings are not setting the scheme (aka returning
/home/user instead of file:///home/user).
Tested, it works great.
