refactor WMTS base layers
- show WMTS layers in normal layer tree instead of separate base layers group
- feature info, legend and metadata on original WMS layers
- apply min/max scale from WMS layer to corresponding WMTS layer
- permalink: WMTS layers included in visibleLayers

Development funded by Kanton Solothurn
refactor WMTS base layers: move WMTS configuration to GISProjectListing.js
Development funded by Kanton Solothurn