Allow hide trigger description in notifications

[litleleprikon]

FEATURE

Summary

Sometimes trigger description have a bunch of additional info related to problem investigation. Long description affects to long alerts that became hard to interpret especially if alerts come in huge amount. I propose allow to hide description in alerts.

Details

I propose add a checkbox to subscription that will hide a description in alerts that are tended by this subscription

[kungasc]

• There may be special decription delimeter for main and instruction parts
• Instruction should be sent to Slack thread

Example:

Here is your favorite trigger.

<--- Instruction -->

To fix it go to monitoring and increase replication factor.

So part 1 will send to notification:

Here is your favorite trigger.

And part 2 will send to thread:

To fix it go to monitoring and increase replication factor.