Changes event log custom text to use built-in custom text system versus resource-specific fields

Overseer has supported event log monitoring for quite some time. It has also supported the ability to have custom text when sending notifications for a new event log entry. In Overseer 4.x, this custom text was directly on the edit resource screen. In Overseer 5.x, this has been moved to the common ‘Custom Text’ section. This allows you to easily specify the custom text you want for event logs, and link it to all your event log resources, instead of having to set it on each event log resource. This interface also shows all the custom variables you can use:

This should make Overseer simpler to use for event log monitoring.