[Frontend] s-status-pending sanding and polishing

open #431
Cleanups, comment removal; Inspector location items
with s-status-pending tweaked;
Fixed grid-item background class;

platform/commonUI/general/res/sass/_object-label.scss

@@ -41,14 +41,14 @@ mct-representation {
             .t-item-icon {
                 &:before {
                     $spinBW: 4px;
-                    $spinD: 0; // $treeTypeIconW - ($spinBW * 2);
+                    $spinD: 0;
                     @include spinner($spinBW);
                     content: "";
                     display: block;
                     position: absolute;
                     left: 50%;
                     top: 50%;
-                    padding: 35%;
+                    padding: 30%;
                     width: $spinD;
                     height: $spinD;
                 }