Process only one consulate per run

scripts/content.js

@@ -469,12 +469,19 @@ async function runner() {
             return;
         }
 
+        let processedConsulates = 0;
         for (let consulate of selectedConsulates) {
+            // only one consulate per run
+            if (processedConsulates > 0) {
+                break;
+            }
             // skip if not time to check
             if (config.consulates[consulate].nextCheckAt > new Date().toISOString()) {
                 continue;
             }
 
+            processedConsulates += 1;
+
             console.log('Checking dates for ' + consulate);
             let availDates = await getAvailableDates(config.consulates[consulate].id);
             config.consulates[consulate].nextCheckAt = getFutureDate(config.frequency, 10);