message: stretch device label in member info if content doesn't fill it
diff: @@ -42,6 +42,7 @@ limitations under the License.
  .mx_MemberDeviceInfo_deviceInfo {
  margin: 0 5px 5px 8px;
  + flex: 1;
  }
  /* "Unblacklist" is too long for a regular button: make it wider and
  