Set the uploaded file path to site/temp by default. Can be set via configuration with "temp-dir" variable.

(This is important, otherwise it uses the current working directory, but for fcgi, this is not always obvious where it is.)
Allow advanced upload, and also basic html upload, in case the dropzone.js has trouble.
Split get and post handling for files module upload request.

src/service/cms_execution.e

@@ -14,6 +14,7 @@ inherit
 		undefine
 			requires_proxy
 		redefine
+			execute,
 			create_router, router,
 			execute_default,
 			filter_execute,
@@ -26,6 +27,8 @@ inherit
 
 	WSF_ROUTED_URI_TEMPLATE_HELPER
 
+	WSF_REQUEST_EXPORTER
+
 	REFACTORING_HELPER
 
 	SHARED_LOGGER
@@ -193,7 +196,20 @@ feature -- Settings: router
 			a_router.handle ("/", fhdl, router.methods_GET)
 		end
 
-feature -- Execute Filter
+feature -- Request execution
+
+	initialize_execution
+			-- Initialize CMS execution.
+		do
+			request.set_uploaded_file_path (api.temp_location)
+		end
+
+	execute
+			-- <Precursor>.
+		do
+			initialize_execution
+			Precursor
+		end
 
 	filter_execute (req: WSF_REQUEST; res: WSF_RESPONSE)
 			-- Execute the filter.