Merge pull request #2507 from matrix-org/bwindels/roomlistjslayout

Redesign: new layout algorithm for room sublists.

res/css/views/rooms/_RoomList.scss

@@ -17,13 +17,14 @@ limitations under the License.
 
 .mx_RoomList {
     /* take up remaining space below TopLeftMenu */
-    flex: 1 1 auto;
-    /* use flexbox to layout sublists */
-    display: flex;
-    flex-direction: column;
+    flex: 1;
     min-height: 0;
 }
 
+.mx_RoomList .mx_ResizeHandle {
+    position: relative;
+}
+
 .mx_SearchBox {
     flex: none;
 }