The toolbar buttons at the bottom of the sidebar still behave weird in some situations. This is a placeholder ticket for everything related when it doesn't fit into another ticket in the sprint.
Do not move this ticket to the next sprint, but create new ones.
[ ] Sidebar selection determines which toolbars buttons are active.
[x] New template and new wikitext buttons are always enabled
[ ] When a wikitext or template header is selected, up/down and delete buttons are enabled.
[ ] When a parameter is selected, the up/down and delete buttons are disabled.
[x] Up/down are disabled for the first and last parts, respectively.
[ ] No matter how the user arrives at a given selection (tab, content click, sidebar click, deleting another parameter...), they see the same buttons enabled.
[ ] Nothing changes in the old workflow
[ ] (nice-to-have) No flicker