v0.35.1: performance, AGPL licensing and documentation overhaul

- Web Server reads static files inline; proxy middleware chain flattened
- About window with license summary and project links; AGPL-3.0-or-later
- Rewritten documentation: feature list, screenshots, performance guide
- Fix false spikes in per-Vhost request-rate charts

src/web_server/response/headers.rs

@@ -66,8 +66,7 @@ pub(super) fn builtin_error_response(status: StatusCode, method: &Method) -> Res
     response
         .headers_mut()
         .insert(CACHE_CONTROL, HeaderValue::from_static("no-store"));
-    response.headers_mut().insert(
-        "x-content-type-options",
+    response.headers_mut().insert(::http::header::X_CONTENT_TYPE_OPTIONS,
         HeaderValue::from_static("nosniff"),
     );
     response
@@ -249,7 +248,7 @@ fn add_download_header(response: &mut Response, service: &CompiledService, path:
 
 pub(super) fn accepts_content_encoding(headers: &HeaderMap, wanted: &str) -> bool {
     let Some(value) = headers
-        .get(http::header::ACCEPT_ENCODING)
+        .get(::http::header::ACCEPT_ENCODING)
         .and_then(|value| value.to_str().ok())
     else {
         return false;