CSS for device blocking

A bunch of updates to the device info:

* format as a table
* make the buttons green, because the old way was super confusing
* instead make the status indicator red/orange/green.

src/skins/vector/css/matrix-react-sdk/views/rooms/MemberInfo.css

@@ -72,3 +72,8 @@ limitations under the License.
     margin-left: 8px;
     line-height: 23px;
 }
+
+.mx_MemberInfo_devices {
+    display: table;
+    border-spacing: 5px;
+}