Ensure panels show information immedeately

[WhiteMagic]

Some UI components don't show their contents correctly when they are created.

• Options only shows content once a tab is clicked as opposed to showing the content of the first tab upon opening
• Launching Gremlin without physical devices causes the Logical Device tab to be selected but it's not really interactable
• The number of action sequences assigned to inputs does not always refresh/update correctly