add a AI chatbot, rename course names

app.py

@@ -15,6 +15,8 @@ page_label = nv()
 if page_label == "Homepage":
     pg.home()
 
+elif page_label == "BuffBot":
+    pg.buffbot()
 elif page_label == "Outstanding Members":
     pg.outstanding_members()
 
@@ -33,14 +35,16 @@ elif page_label == "Join Us":
 # block of PythonX lessons
 elif page_label == "About PythonX":
     pg.pythonx_homepage()    
-elif page_label == "Lesson1":
-    pg.pythonx_lesson1()
-elif page_label == "Lesson2":
-    pg.pythonx_lesson2()
-elif page_label == "Lesson3":
-    pg.pythonx_lesson3()
-elif page_label == "Lesson4":
-    pg.pythonx_lesson4()
+elif page_label == "Introduction":
+    pg.pythonx_introduction()
+elif page_label == "WordCloud":
+    pg.pythonx_wordcloud()
+elif page_label == "Finance":
+    pg.pythonx_finance()
+elif page_label == "GeoMap":
+    pg.pythonx_geomap()
+elif page_label == "BuffBot":
+    pg.pythonx_buffbot()
     
 # block of CIS Tech Challenge Event
 elif page_label == "CIS Tech Challenge":