PlugOS refactor and other tweaks (#631)

* Prep for in-process plug loading (e.g. for CF workers, Deno Deploy)
* Prototype of fixed in-process loading plugs
* Fix: buttons not to scroll with content
* Better positioning of modal especially on mobile
* Move query caching outside query
* Fix annoying mouse behavior when filter box appears
* Page navigator search tweaks

plugs/template/complete.ts

@@ -56,8 +56,7 @@ export async function templateSlashComplete(
       "boolean",
       false,
     ]]],
-    cacheSecs: 5,
-  });
+  }, 5);
   return allTemplates.map((template) => ({
     label: template.trigger!,
     detail: "template",