message: make e2e icons on message transparent
diff: @@ -278,6 +278,10 @@ limitations under the License.
  /* End to end encryption stuff */
  +.mx_EventTile_e2eIcon:hover {
  + opacity: 1;
  +}
  +
  .mx_EventTile_e2eIcon {
  display: block;
  position: absolute;
  @@ -289,6 +293,7 @@ limitations under the License.
  mask-size: 14px;
  mask-repeat: no-repeat;
  mask-position: 0;
  + opacity: 0.2;
  }
  .mx_EventTile_e2eIcon_undecryptable, .mx_EventTile_e2eIcon_unverified {
  