Svelte bug fixes and code cleanup (#1074)

* Fix middle click tab close

* Fix swapping colors in the ColorPicker

* Cleanup

* Fix field inputs

* Fix tab key-based navigation

* Fix ColorPicker reseting Initial color when opened

* Prevent backend fighting with user dragging NumberInput

* Remaining fixes and comment cleanup

frontend-svelte/.eslintrc.js

@@ -95,7 +95,7 @@ module.exports = {
 				"newlines-between": "always-and-inside-groups",
 				pathGroups: [
 					{
-						pattern: "**/*.vue",
+						pattern: "**/*.svelte",
 						group: "unknown",
 						position: "after",
 					},