fix strateiges format for /client/applications

lib/db/client-strategy-store.js

@@ -52,10 +52,10 @@ class ClientStrategyStore {
 
     getByAppName (appName) {
         return this.db
-            .select(COLUMNS)
+            .select('strategies')
             .where('app_name', appName)
             .from(TABLE)
-            .map(mapRow);
+            .map((row) => row.strategies);
     }
 };