Remove dashboard.ini related parts

refs #6639
Deactivate addUrl to Dashboard

refs #6639
Update description if no dashlets available

refs #6639
Add self provided configuration for dashlets

refs #6639
Add self provided configuration for dashlets in monitoring module

refs #6639
Implement self provided configuration for dashboard/dashlets in modules

refs #6639
Merge branch 'bugfix/modules-dashlet-provider-6639'

fixes #6639