Monitoring: implement "Security" config tab
Monitoring_ConfigController: make writeConfiguration's parameter `file' non-required

refs #6641
Monitoring config: implement SecurityForm

refs #6641
Monitoring config: use SecurityForm

refs #6641
SecurityForm: replace `customvars' with `protected_customvars'

refs #6641
Vagrant/Puppet: add file '/etc/icingaweb/modules/monitoring/config.ini'

refs #6641
Remove '{{SAVE_ICON}}', tiny design fixes

refs #6641
Monitoring/Object: filter protected customvars

Move the responsibility from the viewscript to Monitoring/Object

refs #6641
SecurityForm: Add helptext

refs #6641
Merge branch 'bugfix/sensitive-custom-vars-6641'

fixes #6641
Monitoring\Object: fix a couple of cv-related issues

* Don't throw exceptions with no config
* Provide a secure default if not configured
* Improve code readability
Update deprecated output variable in puppet files
Delete deprecated menu.ini.in

refs #5749
Update configurations source paths in puppet default.pp

refs #5749
Delete unnecessary configurations files from .vagrant-puppet

fixes #5749
Fix version access while refreshing translations
Relax locale code validation to just a format check

fixes #6930
Merge branch 'master' into bugfix/rebuild-form-builder-5525

Conflicts:
	modules/monitoring/application/controllers/ConfigController.php