Endpoint details screen should show "No Messages processed in this period of time" instead of a blank section

[sergioc]

If the user is looking at the details of an endpoint for a period of time where no messages have been processed yet, it should be made explicit that no messages have been processed with a simple message in the list of message types instead of showing it empty:

[WojcikMike]

Will be released as a part of 1.15