Recurring (#131)

* Save created recurring info

* Add to confirm dialog

* Update RPI at confirm

* Make singleton

* Add history to recurring payments

* USD/ZEC switch

* Fix check state

* recurring item serialization

* Add recurring payments to file

* Refactor

* Address view model

* Wire up dialog

* Update windows installer logos

* Store all payments in the store

* Save table geometry

* Add recurring payments view

* Add deletion

* Add recurring payment execution

* Add donation address to address book

* Add multiple payment handling

* Disable recurring for multiple payments

* Handle pay last

* Handle pay all

* Reomve frequency

* Enable recurring payments only for testnet

* For testing, allow payments in 5 min intervals

* Fix request money amounts

src/turnstile.cpp

@@ -246,6 +246,11 @@ void Turnstile::executeMigrationStep() {
     if (Settings::getInstance()->isSyncing())
         return;
 
+    // Also, process payments only when the Payments UI is ready, otherwise
+    // we might mess things up
+    if (!mainwindow->isPaymentsReady())
+        return;
+
     auto plan = readMigrationPlan();
 
     //qDebug() << QString("Executing step");