Prepare 4.1.0

[julien-nc]

Changed

• All the reference providers now implement IPublicReferenceProvider
• Remove default maptiler key

Fixed

• Do not proxy on public pages
• Add required csp when proxy is disabled (we access OSM/MapTiler directly)
• Do not query user config with IUserConfig in public contexts (listeners) @julien-nc #61
• Remove unused userId in OsmAPIService
• Do not save map state in public pages
• Proxy maptiler logo URL only if needed
• Always fallback to the osmRaster style when no key is set, do not add vector styles when no key is set
• Hide all terrain stuff if no api key set
• Add referer header in map requests now enforced by OSM