Show pinned message changes in the timeline

Signed-off-by: Travis Ralston <travpc@gmail.com>

src/TextForEvent.js

@@ -259,6 +259,11 @@ function textForPowerEvent(event) {
     });
 }
 
+function textForPinnedEvent(event) {
+    const senderName = event.getSender();
+    return _t("%(senderName)s changed the pinned messages for the room.", {senderName});
+}
+
 function textForWidgetEvent(event) {
     const senderName = event.getSender();
     const {name: prevName, type: prevType, url: prevUrl} = event.getPrevContent();
@@ -301,6 +306,7 @@ const handlers = {
     'm.room.history_visibility': textForHistoryVisibilityEvent,
     'm.room.encryption': textForEncryptionEvent,
     'm.room.power_levels': textForPowerEvent,
+    'm.room.pinned_events': textForPinnedEvent,
 
     'im.vector.modular.widgets': textForWidgetEvent,
 };

src/components/views/rooms/EventTile.js

@@ -44,6 +44,7 @@ var eventTileTypes = {
     'm.room.history_visibility' : 'messages.TextualEvent',
     'm.room.encryption' : 'messages.TextualEvent',
     'm.room.power_levels' : 'messages.TextualEvent',
+    'm.room.pinned_events' : 'messages.TextualEvent',
 
     'im.vector.modular.widgets': 'messages.TextualEvent',
 };

src/i18n/strings/en_EN.json

@@ -875,6 +875,7 @@
     "Add rooms to the group summary": "Add rooms to the group summary",
     "Which rooms would you like to add to this summary?": "Which rooms would you like to add to this summary?",
     "Room name or alias": "Room name or alias",
+    "%(senderName)s changed the pinned messages for the room.": "%(senderName)s changed the pinned messages for the room.",
     "You are an administrator of this group": "You are an administrator of this group",
     "Failed to add the following rooms to the summary of %(groupId)s:": "Failed to add the following rooms to the summary of %(groupId)s:",
     "Failed to remove the room from the summary of %(groupId)s": "Failed to remove the room from the summary of %(groupId)s",

src/i18n/strings/en_US.json

@@ -852,6 +852,7 @@
     "%(widgetName)s widget removed by %(senderName)s": "%(widgetName)s widget removed by %(senderName)s",
     "Robot check is currently unavailable on desktop - please use a <a>web browser</a>": "Robot check is currently unavailable on desktop - please use a <a>web browser</a>",
     "Verifies a user, device, and pubkey tuple": "Verifies a user, device, and pubkey tuple",
+    "%(senderName)s changed the pinned messages for the room.": "%(senderName)s changed the pinned messages for the room.",
     "It is currently only possible to create groups on your own home server: use a group ID ending with %(domain)s": "It is currently only possible to create groups on your own home server: use a group ID ending with %(domain)s",
     "To join an existing group you'll have to know its group identifier; this will look something like <i>+example:matrix.org</i>.": "To join an existing group you'll have to know its group identifier; this will look something like <i>+example:matrix.org</i>."
 }