Merge remote-tracking branch 'origin/stable'

# Conflicts:
#	src/services/sync_table.js

src/services/sql.js

@@ -211,6 +211,8 @@ async function transactional(func) {
 
             transactionActive = false;
             resolve();
+
+            setTimeout(() => require('./ws').sendPingToAllClients(), 50);
         }
         catch (e) {
             if (transactionActive) {