Table fails when two series have the same name

[proand]

Describe your issue

Diagram type "Table" in FHI Angular Highcharts fails when two series have the same name.

Steps to reproduce

Go to Demo april visning

Supplementary information

Use the following test data to mock the same in the demo app:

{
    "title": "abc",
    "series": [
        {
            "name": "Hele landet",
            "data": [
                {
                    "name": "2015",
                    "y": 10.3
                },
                {
                    "name": "2016",
                    "y": 10.3
                }
            ]
        },
        {
            "name": "Oslo",
            "data": [
                {
                    "name": "2015",
                    "y": 20.7
                },
                {
                    "name": "2016",
                    "y": 20.7
                }
            ]
        },
        {
            "name": "Østfold",
            "data": [
                {
                    "name": "2015",
                    "y": 8.8
                },
                {
                    "name": "2016",
                    "y": 9
                }
            ]
        },
        {
            "name": "Oslo",
            "data": [
                {
                    "name": "2015",
                    "y": 20.7
                },
                {
                    "name": "2016",
                    "y": 20.7
                }
            ]
        }
    ],
    "diagramTypeId": "table",
    "diagramTypeNavId": "default",
    "openSource": false,
    "flags": [
        {
            "symbol": "..",
            "label": "Manglende data"
        },
        {
            "symbol": ":",
            "label": "Anonymisert eller skjult av andre årsaker"
        }
    ],
    "tableOrientation": "seriesAsRows",
    "diagramTypeSubset": [
        "barStacked",
        "columnStacked",
        "column",
        "line",
        "table"
    ],
    "decimals": 1,
    "seriesHasDecimalDataPoints": true
}

[proand]

@VillereV I wonder if this is an acceptable solution:

@cathral may of course come up with a better text for the error message 😄

[VillereV]

@proand The suggested solution sounds OK to me.