If content type cannot be determined from path, then try uri.

This is useful for minified files (eg. path file.min.js, file file.js).

libraries/ESP8266WebServer/src/detail/RequestHandlersImpl.h

@@ -96,6 +96,13 @@ class StaticRequestHandler : public RequestHandler {
 
         String contentType = getContentType(path);
 
+        // If content type not matched on path, then try for uri
+	// Useful for minified javascript et al.
+        if (contentType.equals("application/octet-stream"))
+        {
+            contentType = getContentType(requestUri);
+        }
+
         // look for gz file, only if the original specified path is not a gz.  So part only works to send gzip via content encoding when a non compressed is asked for
         // if you point the the path to gzip you will serve the gzip as content type "application/x-gzip", not text or javascript etc...
         if (!path.endsWith(".gz") && !_fs.exists(path))  {