[Fix] UI Fixes (#266)

Rather than have a bunch of pull-requests that @jebus will have to merge shall we collect some of the fixes for the UI issues I found in here.

- [x] #259
- [x] #260
- [x] #261
- [x] #262
- [x] #263
- [x] #264
- [x] #265

Co-authored-by: Tobias O <tobias.olenyi@envipath.com>
Reviewed-on: enviPath/enviPy#266
Co-authored-by: Liam Brydon <lbry121@aucklanduni.ac.nz>
Co-committed-by: Liam Brydon <lbry121@aucklanduni.ac.nz>

templates/collections/_paginated_list_partial.html

@@ -2,7 +2,12 @@
 {# Variables: empty_text (string), show_review_badge (bool), always_show_badge (bool) #}
 
 {# Loading state #}
-<div x-show="isLoading">{% include "components/loading-spinner.html" %}</div>
+<div
+  x-show="isLoading"
+  class="mx-auto flex h-32 w-32 items-center justify-center"
+>
+  {% include "components/loading-spinner.html" %}
+</div>
 
 {# Error state #}
 <div