rejig css:

* sans-serif font
 * use display: table for the message list so that everything lines up nicely
 * switch to flexbox layout rather than position absolutes to avoid assuming a full screen UI and improve maintainability (and better match atomify)
 * neutralise the colouring and styling of highlighted rooms in the recents list
 * switch from ul + li's to a series of divs in some places where the li's are achieving nothing but adding more complexity to the DOM
 * add mx_MessageTileType as a generic css base class for all message tiles

skins/base/css/organisms/RoomList.css

@@ -16,12 +16,3 @@ limitations under the License.
 
 .mx_RoomList {
 }
-
-.mx_RoomList ul {
-    padding: 0px;
-    margin: 0px;
-}
-
-.mx_RoomList ul li {
-    list-style-type: none;
-}