Abandons all storage initialisation routines if storage is disabled in config.

lib/modules/storage/index.js

@@ -17,6 +17,8 @@ class Storage {
     this._events = options.events;
     this._logger = options.logger;
 
+    if(!this._storageConfig.enabled) return;
+
     // filter list of dapp connections based on available_providers set in config
     let hasSwarm = _.contains(this._storageConfig.available_providers, 'swarm'); // don't need to eval this in every loop iteration
     // contains valid dapp storage providers