Re #133: Do not cache in memory db-stored app settings, for clustered env compability.
Re #133: Read app config from db once per request, and cache.
Re #140: Rename ExportJob class to XMLExportJob.
Re #140: Re-factor CSV exports as Delayed Job.
Fix SCP of config files from app master in deploy hook.
Re #134: Stored cached assets in shared directory, cleared if required on deploy.