Allow ModuleUpdate to use multiple requirements files, no longer need to care about naming, and use conventional requirement parsing. Also add WebHost to it.

WebHost.py

@@ -2,6 +2,10 @@ import os
 import multiprocessing
 import logging
 
+import ModuleUpdate
+ModuleUpdate.requirements_files.append(os.path.join("WebHostLib", "requirements.txt"))
+ModuleUpdate.update()
+
 from WebHostLib import app as raw_app
 from waitress import serve