NEII - v8 release

[AnaBelgun]

• [x] https://github.com/TerriaJS/neii-viewer/issues/189
• [x] https://github.com/TerriaJS/neii-viewer/issues/191
• [x] https://github.com/TerriaJS/neii-viewer/issues/192
• [ ] https://github.com/TerriaJS/neii-viewer/issues/193
• [x] https://github.com/TerriaJS/neii-viewer/issues/194
• [x] https://github.com/TerriaJS/neii-viewer/issues/195
• [x] https://github.com/TerriaJS/neii-viewer/issues/204
• [x] https://github.com/TerriaJS/neii-viewer/issues/215

[nf-s]

All done except for Related Maps feature