When no themes are available, a 0 renders instead of nothing. This update just changes the check to make sure there are items in the array since an array of 0 still has a length. Fixes one part of https://github.com/GetDKAN/data-catalog-components/issues/81
When no themes are available, a 0 renders instead of nothing. This update just changes the check to make sure there are items in the array since an array of 0 still has a length. Fixes one part of https://github.com/GetDKAN/data-catalog-components/issues/81