Add alias to data dictionary entity section

[stansmith907]

Add an 'alias' element to the entity and attribute sections of mdJson.

Add to entity ...

        "entityId": "",
        "commonName": "",
        "codeName": "",
        "alias": [""],
        "definition": "",
        "primaryKeyAttributeCodeName": [""],
        "index": [
          {
            "codeName": "",
            "allowDuplicates": false,
            "attributeCodeName": [""]
          }
        ],
        "attribute": []

Add to attribute ...

            "commonName": "",
            "codeName": "",
            "alias": [""],
            "definition": "",
            "dataType": "",
            "required": true,
            "units": "",
            "domainId": "",
            "minValue": "",
            "maxValue": ""

Is everyone okay with above proposal?

[stansmith907]

Alias added to entity and attribute as above. mdJson reader and internal object have been modified and tested. Because changes were made to the template and examples neither the validation or unit test work properly until example and schema changes are made.

Also, I made dataDictionary an array. ISO 1915-1 allows for multiple portrayal catalogues (data dictionaries). Since ISO 19110 is the HTML for a single dictionary, not sure what to do if someone actually enters multiple dictionary definitions and writes 19110, output just the first?

19110 allows alias and 'localName' and will add these tomorrow.

[stansmith907]

I added aliases for entities (feature type) to ISO 19110 writer. Turns out aliases are not supported for attributes, only entities. So attribute aliases will only be in mdJson. Since dataDictionary was changed to an array to support 19115-1, 19110 was set to only accept dataDictionary[0](the first dictionary defined).