Add 'string' to typeList
Add 'string' to typeList

Generally, users expect that a string that in the coming form data object can be filtered by only use typeList:['string']. 
Actually, to filter form data object 'object' parameter must be found in the parameters together with 'string'.
For the sake of example we can set the filter as `typeList: ['object', 'string']`
efkan/content-filter