Better error log in fetch failure callback + timeout 600sec in OrthancRestApiCommand + guard against dead controller access in PanSceneTracker + relaxed DicomStructureSet AddReferenceSlice method to accept extraneous adds of the same slice (while trying to understand how it happens in the first place)

{
    "include" : [
        "../../Platforms/Wasm/stone-framework-loader.ts",
        "../../Platforms/Wasm/wasm-application-runner.ts",
        "../../Platforms/Wasm/wasm-viewport.ts"
    ]
}