Show full timestamp on hover (#714)

* Show full timestamp on hover

* Not always display time

* Always show full timestamp in search

src/app/molecules/message/TimelineChange.jsx

@@ -4,6 +4,7 @@ import './TimelineChange.scss';
 
 import Text from '../../atoms/text/Text';
 import RawIcon from '../../atoms/system-icons/RawIcon';
+import Time from '../../atoms/time/Time';
 
 import JoinArraowIC from '../../../../public/res/ic/outlined/join-arrow.svg';
 import LeaveArraowIC from '../../../../public/res/ic/outlined/leave-arrow.svg';
@@ -12,7 +13,7 @@ import InviteCancelArraowIC from '../../../../public/res/ic/outlined/invite-canc
 import UserIC from '../../../../public/res/ic/outlined/user.svg';
 
 function TimelineChange({
-  variant, content, time, onClick,
+  variant, content, timestamp, onClick,
 }) {
   let iconSrc;
 
@@ -48,7 +49,9 @@ function TimelineChange({
         </Text>
       </div>
       <div className="timeline-change__time">
-        <Text variant="b3">{time}</Text>
+        <Text variant="b3">
+          <Time timestamp={timestamp} />
+        </Text>
       </div>
     </button>
   );
@@ -68,7 +71,7 @@ TimelineChange.propTypes = {
     PropTypes.string,
     PropTypes.node,
   ]).isRequired,
-  time: PropTypes.string.isRequired,
+  timestamp: PropTypes.number.isRequired,
   onClick: PropTypes.func,
 };