monitoring: Remove obsolete helper `ResolveComments'
monitoring: Fix link to an object's contact in the detail views
monitoring: Don't support status.dat as backend

Icinga Web 2 will not support status.dat for now and maybe forever.
monitoring: Fix that sorting a data view is not possible if its sort
rules are empty
monitoring: Fix some of `DataView's PHPDoc
Fix the duplicate entries in monitoring list shows

refs #7057
refs #7344
fixes #7057
Merge branch 'master' into bugfix/monitoring-list-dup-entries-7057
Merge branch 'bugfix/monitoring-list-dup-entries-7057'

refs #7057
refs #7344
Prototyping alert history

refs #4074
AlertSummary: Decouple components and use partials

refs #4078
AlertSummary: Add healing chart

refs #4076