Add tooltip for "client ID" column

Sometimes the client ID could be quite long and this patch helps showing
it.

src/gui/properties/peerlistwidget.cpp

@@ -447,7 +447,7 @@ void PeerListWidget::updatePeer(const BitTorrent::Torrent *torrent, const BitTor
     setModelData(row, PeerListColumns::CONNECTION, peer.connectionType(), peer.connectionType());
     setModelData(row, PeerListColumns::FLAGS, peer.flags(), peer.flags(), {}, peer.flagsDescription());
     const QString client = peer.client().toHtmlEscaped();
-    setModelData(row, PeerListColumns::CLIENT, client, client);
+    setModelData(row, PeerListColumns::CLIENT, client, client, {}, client);
     setModelData(row, PeerListColumns::PROGRESS, (Utils::String::fromDouble(peer.progress() * 100, 1) + '%'), peer.progress(), intDataTextAlignment);
     const QString downSpeed = (hideValues && (peer.payloadDownSpeed() <= 0)) ? QString {} : Utils::Misc::friendlyUnit(peer.payloadDownSpeed(), true);
     setModelData(row, PeerListColumns::DOWN_SPEED, downSpeed, peer.payloadDownSpeed(), intDataTextAlignment);
@@ -461,7 +461,7 @@ void PeerListWidget::updatePeer(const BitTorrent::Torrent *torrent, const BitTor
 
     const QStringList downloadingFiles {torrent->info().filesForPiece(peer.downloadingPieceIndex())};
     const QString downloadingFilesDisplayValue = downloadingFiles.join(';');
-    setModelData(row, PeerListColumns::DOWNLOADING_PIECE, downloadingFilesDisplayValue, downloadingFilesDisplayValue, {}, downloadingFiles.join('\n'));
+    setModelData(row, PeerListColumns::DOWNLOADING_PIECE, downloadingFilesDisplayValue, downloadingFilesDisplayValue, {}, downloadingFiles.join(QLatin1Char('\n')));
 
     if (m_resolver)
         m_resolver->resolve(peerEndpoint.address.ip);