Preserve URL hash when redirecting in grid "reset to defaults"

tailbone/templates/grids/buefy.mako

@@ -542,7 +542,16 @@
 
           resetView() {
               this.loading = true
-              location.href = '?reset-to-default-filters=true'
+
+              // use current url proper, plus reset param
+              let url = '?reset-to-default-filters=true'
+
+              // add current hash, to preserve that in redirect
+              if (location.hash) {
+                  url += '&hash=' + location.hash.slice(1)
+              }
+
+              location.href = url
           },
 
           addFilter(filter_key) {