Add class to EventTile Line's that are quotes

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

src/components/views/rooms/EventTile.js

@@ -592,7 +592,7 @@ module.exports = withMatrixClient(React.createClass({
                     <div className={classes}>
                         { avatar }
                         { sender }
-                        <div className="mx_EventTile_line">
+                        <div className="mx_EventTile_line mx_EventTile_quote">
                             <a href={permalink} onClick={this.onPermalinkClicked}>
                                 { timestamp }
                             </a>