TimelineEvent : update sender data when loading room members and prune event (+ remove RoomSummaryMapper param)

vector/src/main/java/im/vector/riotx/features/home/HomeActivityViewModel.kt

@@ -73,7 +73,7 @@ class HomeActivityViewModel @AssistedInject constructor(@Assisted initialState:
     private fun observeRoomAndGroup() {
         Observable
                 .combineLatest<List<RoomSummary>, Option<GroupSummary>, List<RoomSummary>>(
-                        session.rx().liveRoomSummaries(fetchLastEvents = true).throttleLast(300, TimeUnit.MILLISECONDS),
+                        session.rx().liveRoomSummaries().throttleLast(300, TimeUnit.MILLISECONDS),
                         selectedGroupStore.observe(),
                         BiFunction { rooms, selectedGroupOption ->
                             val selectedGroup = selectedGroupOption.orNull()

vector/src/main/java/im/vector/riotx/features/home/room/detail/RoomDetailViewModel.kt

@@ -500,17 +500,7 @@ class RoomDetailViewModel @AssistedInject constructor(@Assisted initialState: Ro
     }
 
     private fun observeRoomSummary() {
-        room.rx().liveRoomSummary(false)
-                .observeOn(AndroidSchedulers.mainThread())
-                .flatMap {
-                    if (it.membership != Membership.INVITE || it.latestEvent != null) {
-                        // Not an invitation, or already fetching last event
-                        Observable.just(it)
-                    } else {
-                        // We need the last event
-                        room.rx().liveRoomSummary(true)
-                    }
-                }
+        room.rx().liveRoomSummary()
                 .execute { async ->
                     copy(
                             asyncRoomSummary = async,

vector/src/main/java/im/vector/riotx/features/roomdirectory/RoomDirectoryViewModel.kt

@@ -86,7 +86,7 @@ class RoomDirectoryViewModel @AssistedInject constructor(@Assisted initialState:
     private fun observeJoinedRooms() {
         session
                 .rx()
-                .liveRoomSummaries(fetchLastEvents = false)
+                .liveRoomSummaries()
                 .subscribe { list ->
                     val joinedRoomIds = list
                             // Keep only joined room

vector/src/main/java/im/vector/riotx/features/roomdirectory/roompreview/RoomPreviewViewModel.kt

@@ -54,7 +54,7 @@ class RoomPreviewViewModel @AssistedInject constructor(@Assisted initialState: R
     private fun observeJoinedRooms() {
         session
                 .rx()
-                .liveRoomSummaries(fetchLastEvents = false)
+                .liveRoomSummaries()
                 .subscribe { list ->
                     withState { state ->
                         val isRoomJoined = list