added invalid eppa values

app/__init__.py

@@ -40,7 +40,7 @@ def create_app(config_name):
     @app.route('/', methods=['GET', 'POST']) # initial route to display the reg page
     def index():
 
-        invalid_eppa = ["staff", "affiliate"]
+        invalid_eppa = ["alum", "library-walk-in"]
 
         if 'uid' not in session:
             session['uid']=str(uuid.uuid4())