uk_council.csv has missing rows

[mhawksey]

I've been trying to graph some council data for Northern Ireland without success. When I try the uk_council.csv example https://github.com/petewarden/openheatmap/blob/106437a9727e91b12dafcfa31194702311fe2db1/static/csv_examples/uk_council.csv there are a number of errors mostly for Northern Ireland councils

Row 7: The value Antrim Borough Council wasn't recognised in column "uk_council"
Row 8: The value Ards Borough Council wasn't recognised in column "uk_council"
Row 10: The value Armagh wasn't recognised in column "uk_council"
Row 16: The value Ballymena wasn't recognised in column "uk_council"
Row 17: The value Ballymoney Borough Council wasn't recognised in column "uk_council"
Row 18: The value Banbridge District Council wasn't recognised in column "uk_council"
Row 26: The value Belfast City Council wasn't recognised in column "uk_council"
Row 60: The value Carrickfergus Borough Council wasn't recognised in column "uk_council"
Row 62: The value Castlereagh Borough Council wasn't recognised in column "uk_council"
Row 76: The value City and County of Swansea wasn't recognised in column "uk_council"
Row 79: The value City of London Corporation wasn't recognised in column "uk_council"
Row 84: The value Coleraine Borough Council wasn't recognised in column "uk_council"
Row 85: The value Comhairle nan Eilean Siar (Western Isles Council) wasn't recognised in column "uk_council"
Row 87: The value Cookstown District Council wasn't recognised in column "uk_council"
Row 92: The value Council of the Isles of Scilly wasn't recognised in column "uk_council"
Row 94: The value Craigavon Borough Council wasn't recognised in column "uk_council"
Row 106: The value Derry (City of Londonderry) wasn't recognised in column "uk_council"
Rows 107, 130, 152, 156, 161, 188, 193, 335: Value couldn't be understood as a number: n
Row 111: The value Down District Council wasn't recognised in column "uk_council"
Row 115: The value Dungannon District Council wasn't recognised in column "uk_council"
Row 143: The value Fermanagh Council wasn't recognised in column "uk_council"
Row 190: The value Larne Borough Council wasn't recognised in column "uk_council"
Row 196: The value Limavady Borough Council wasn't recognised in column "uk_council"
Row 199: The value Lisburn City Council wasn't recognised in column "uk_council"
Row 231: The value Magherafelt District Council wasn't recognised in column "uk_council"
Row 250: The value Moyle District Council wasn't recognised in column "uk_council"
Row 257: The value Newry and Mourne District Council wasn't recognised in column "uk_council"
Row 258: The value Newtownabbey Borough Council wasn't recognised in column "uk_council"
Row 263: The value North Down Borough Council wasn't recognised in column "uk_council"
Row 285: The value Omagh District Council wasn't recognised in column "uk_council"
Row 367: The value Strabane District Council wasn't recognised in column "uk_council"