Clean up events tab and table details

[xpdota]

Now uses Groovy's definition of "Properties" for all the tables, rather than directly dumping fields. This means that everything you can see in the details pane is usable as a property in scripts and callouts.

[github-actions]

Once this branch successfully builds, you will be able to try the branch out for yourself by changing the "branch" in your updater to "table-display-improvements" (without the quotes).
This setting can be found under the "Updates" tab.

Don't forget to change back when you are done testing. You should reset your branch either to 'stable' for normal releases, or 'master' for beta builds.