add admin page to manage private data

webpages/buffteks_authenticator.py

@@ -0,0 +1,18 @@
+
+# for authentication
+import yaml
+from yaml.loader import SafeLoader
+import streamlit_authenticator as stauth
+
+
+def load_authenticator():
+    with open('webpages/users.yaml') as f:
+        users = yaml.load(f, Loader=SafeLoader)
+        
+    authenticator = stauth.Authenticate(
+        users['credentials'],
+        users['cookie']['name'],
+        users['cookie']['key'],
+        users['cookie']['expiry_days']
+    )
+    return authenticator