Enhance contest file upload interface in app.py

- Updated the layout of the contest file upload section to improve user feedback, including a new warning message prompting users to confirm data accuracy before sending to the database.
- Adjusted column widths for better visual organization and ensured that return messages are only displayed when applicable, enhancing overall user experience.

app.py

@@ -173,14 +173,17 @@ with tab1:
         st.session_state['Contest'] = st.session_state['Contest'].dropna(how='all')
         st.session_state['Contest'] = st.session_state['Contest'].reset_index(drop=True)
         if st.session_state['Contest'] is not None:
-            success_col, blank_col, upload_col, message_col = st.columns([2, 1, 1, 1])
+            success_col, info_col, upload_col, message_col = st.columns([1, 3, 1, 2])
             with success_col:
                 st.success('Contest file loaded successfully!')
+            with info_col:
+                st.warning("If you have confirmed that the data is correct, you can send the CSV to the database to enrich Paydirt's sources and help us create actionable tools and algorithms >>")
             with upload_col:
                 if st.button('Send file to Database?', key='export_contest_file'):
                     return_message = export_contest_file(db, sport_select, type_var, date_select, contest_id_map[contest_name_var], st.session_state['Contest_file'])
             with message_col:
-                st.info(return_message)
+                if return_message is not None:
+                    st.info(return_message)
             st.dataframe(st.session_state['Contest'].head(100))
         
     if 'Contest_file' in st.session_state: