Bug fix/improve shards ui (#8583)

* optimized the shards view

* changelog

CHANGELOG

@@ -1,11 +1,15 @@
 devel
 -----
 
+* fixed internal issuel #3546: improved the shards view in the web ui if there
+  is only one shard to display.
+
 * fixed internal issue #3789: restricted the allowed query names for user
   defined custom queries within the web ui.
   
 * upgraded bundled RocksDB version to 6.0
 
+
 * added "--log.ids" option to arangod
 
   The default value for this option is `true`. Setting the option to `false`

js/apps/system/_admin/aardvark/APP/frontend/js/views/shardsView.js

@@ -374,6 +374,14 @@
         collections: ordered,
         visible: this.visibleCollection
       }));
+
+      // if we have only one collection to show, automatically open the entry
+      if ($('.sectionShard').length === 1) {
+        $('.sectionHeader').first().click();
+      }
+
+      // change the min height of innerContent - only for this view (temporary)
+      $('.innerContent').css('min-height', '0px');
     },
 
     updateServerTime: function () {