cleanup frontend template routing

go do a search for

```
// TODO: skip org name if we're not licensed
```

and then do what it says :)

basically, check

```ts
const { multiple_organizations: organizationsEnabled } = useFeatureVisibility();
```

and then if `organizationsEnabled` is `true`, use the `/template/:organization/:template` route, and if it's `false` use the `/template/:template` route.