Adds further fixes for lists inside menu, adds nested grid coupling with popup

src/definitions/elements/list.less

@@ -246,6 +246,14 @@ ol.ui.list ol,
   border: none;
   background: none;
 }
+.ui.menu .ui.list .list > .item:first-child,
+.ui.menu .ui.list > .item:first-child {
+  padding-top: 0em;
+}
+.ui.menu .ui.list .list > .item:last-child,
+.ui.menu .ui.list > .item:last-child {
+  padding-bottom: 0em;
+}
 
 
 /*******************************
@@ -496,6 +504,7 @@ ul.ui.list li:before,
 .ui.bulleted.list .list > .item:before,
 .ui.bulleted.list > .item:before {
   position: absolute;
+  top: auto;
   left: @bulletOffset;
   content: @bulletCharacter;
   opacity: @bulletOpacity;

src/definitions/modules/popup.less

@@ -177,6 +177,16 @@
   box-shadow: @rightArrowBoxShadow;
 }
 
+/*******************************
+            Coupling
+*******************************/
+
+/* Immediate Nested Grid */
+.ui.popup > .ui.grid:not(.padded) {
+  width: @nestedGridWidth;
+  margin: @nestedGridMargin;
+}
+
 /*******************************
             States
 *******************************/

src/themes/default/elements/list.variables

@@ -2,7 +2,6 @@
              List
 *******************************/
 
-
 /*-------------------
          View
 --------------------*/

src/themes/default/modules/popup.variables

@@ -60,7 +60,9 @@
        Coupling
 --------------------*/
 
-@popupButtonWidth: 100%;
+/* (padding * @medium) */
+@nestedGridMargin: -0.7rem -0.875rem;
+@nestedGridWidth: ~"calc(100% + 1.75rem)";
 
 /*-------------------
        States