Improve support accounts presentation.

- Change "Bot Info" to "User Info".
- Remove "Block user" and "Add to Group" buttons from profile page.
- Allow revoking messages from support chats.

Telegram/SourceFiles/history/history_item.cpp

@@ -493,7 +493,7 @@ bool HistoryItem::canDeleteForEveryone(TimeId now) const {
 	} else if (const auto user = peer->asUser()) {
 		// Bots receive all messages and there is no sense in revoking them.
 		// See https://github.com/telegramdesktop/tdesktop/issues/3818
-		if (user->botInfo) {
+		if (user->isBot() && !user->isSupport()) {
 			return false;
 		}
 	}

Telegram/SourceFiles/info/info_top_bar.cpp

@@ -556,11 +556,11 @@ rpl::producer<QString> TitleValue(
 		case Section::Type::Profile:
 			if (const auto feed = key.feed()) {
 				return lng_info_feed_title;
-			} else if (auto user = peer->asUser()) {
-				return user->botInfo
+			} else if (const auto user = peer->asUser()) {
+				return (user->isBot() && !user->isSupport())
 					? lng_info_bot_title
 					: lng_info_user_title;
-			} else if (auto channel = peer->asChannel()) {
+			} else if (const auto channel = peer->asChannel()) {
 				return channel->isMegagroup()
 					? lng_info_group_title
 					: lng_info_channel_title;

Telegram/SourceFiles/info/profile/info_profile_actions.cpp

@@ -652,14 +652,14 @@ void ActionsFiller::fillUserActions(not_null<UserData*> user) {
 	}
 	addClearHistoryAction(user);
 	addDeleteConversationAction(user);
-	if (!user->isSelf()) {
-		if (user->botInfo) {
+	if (!user->isSelf() && !user->isSupport()) {
+		if (user->isBot()) {
 			addBotCommandActions(user);
 		}
 		_wrap->add(CreateSkipWidget(
 			_wrap,
 			st::infoBlockButtonSkip));
-		if (user->isBot() && !user->isSupport()) {
+		if (user->isBot()) {
 			addReportAction();
 		}
 		addBlockAction(user);

Telegram/SourceFiles/info/profile/info_profile_values.cpp

@@ -136,7 +136,7 @@ rpl::producer<bool> IsContactValue(not_null<UserData*> user) {
 }
 
 rpl::producer<bool> CanInviteBotToGroupValue(not_null<UserData*> user) {
-	if (!user->botInfo) {
+	if (!user->isBot() || user->isSupport()) {
 		return rpl::single(false);
 	}
 	return Notify::PeerUpdateValue(