code: function(app, namespace, callback){
  
          self.get(app, function(err, config){
              if (err) {
                  //logger.error('gina', 'UTILS:CONFIG:ERR:4', err, __stack);
                  console.error(err.stack||err.message);
                  callback(err + 'Utils.Config.get(...)');
              }
  
              try {
                  callback( false, getVar('paths.' + namespace, config) );
  
              } catch (err) {
                  var err = new Error('Config.getPath(app, cat, callback): cat not found');
                  callback(err)
              }
          })
      }
docs: Get path by app & namespance
  
  @param {string} app
  @param {string} namespace
  
  @callback callback
  @param {string} err
  @param {string} path
  
  @private