Resolve "Conform analytics header styling"

ee/app/assets/stylesheets/pages/productivity_analytics.scss

@@ -5,7 +5,8 @@
   @include media-breakpoint-down(md) {
     width: 100%;
 
-    .dropdown {
+    .dropdown-projects {
+      margin-top: $gl-padding-8;
       margin-bottom: $gl-padding-8;
     }
   }

ee/app/views/analytics/productivity_analytics/show.html.haml

 - page_title _('Productivity Analytics')
 
 #js-productivity-analytics
-  .row-content-block.second-block.d-flex.flex-column.flex-lg-row
+  .page-title-holder.d-flex.align-items-center
+    .page-title
+      = _('Productivity Analytics')
+  .row-content-block.second-block.d-flex.flex-column.flex-lg-row.mt-3.py-2.px-3
     .js-group-project-select-container
     .js-search-bar.filter-container.hide
       = render 'shared/issuable/search_bar', type: :productivity_analytics