Feature: Improve the UX with the Journal view

[cdprete]

Hello.

The Journal view is a nice to have thing to monitor what's happening with the registered applications, especially when some are missing, but it's very limited at the moment and mostly unusable as soon as you start to have a bunch of applications in there.

It would be great if the following features could be added:

• filtering: allow to filter the entries by application name and/or event type.
  For example, I would like to have the following filters: application = X, event = X, application = X AND event = Y
• sorting: allow to sort the entries by application name, event type and/or timestamp.
  Ideally, the sorting may be applied on the columns of the table (something like 2 arrows, up and down, for ASC and DESC sorting) and if multiple columns are sorted then the all the applied sorts are ANDed.
• links: add a link to the application name and instance ID that brings the user to the overview page of that application / instance.
• the body of the DEREGISTRATION event should be similar to the one of the REGISTRATION in the sense that it should contain some information to identify which instance really unregistered (e.g.: the hostname).

Kind regards and thanks in advance for all your efforts around this great product you're providing.