Fix missing timestamp in SCHEDULE_FORCED_HOST_SVC_CHECKS command.

Fixes #5755
Fix category for Reporting cronk in disable snippet.

Fixes #5993
Update package READMEs with a note on Icinga 2 config.
Fix StatusSummaryCronk using wrong target data

fixes #6126
Fix: Test for valid data parameter in command api
Fix: Hardening command send operation

Sanitize data while building the command string and use default
values by xml definition.
Ext: Add non-leaking override for `TreeNode::removeChild()'
UserManager: Fix user roles grid

Roles show description field now.

fixes #6261
LongPluginOutput: Fix missing support of multi line in html

refs #2653
Changelog for 1.11.1
Bump version to 1.11.1
Bump spec file to 1.11.1