Refactor download button for contest info in app.py to unify key

- Consolidated the download button for contest information by using a single unique key, streamlining the code and enhancing the user experience when exporting contest data as a CSV file.

app.py

@@ -8,7 +8,6 @@ from pymongo.mongo_client import MongoClient
 from pymongo.server_api import ServerApi
 from datetime import datetime
 
-
 # Just setting a note here to say that I should attempt to do some memory allocation savings and swap to numpy soon
 
 def init_conn():
@@ -442,10 +441,9 @@ with tab2:
             use_container_width=True,
             hide_index=True
         )
-        st.download_button(label="Download Contest Info", data=st.session_state['display_contest_info'].to_csv(index=False), file_name="contest_info.csv", mime="text/csv", key='download_contest_1')
     else:
         st.stop()
-    st.download_button(label="Download Contest Info", data=st.session_state['display_contest_info'].to_csv(index=False), file_name="contest_info.csv", mime="text/csv", key='download_contest_2')
+    st.download_button(label="Download Contest Info", data=st.session_state['display_contest_info'].to_csv(index=False), file_name="contest_info.csv", mime="text/csv", key='download_contest')
     if 'Contest' in st.session_state:
         with st.container():
             tab1, tab2, tab3, tab4, tab5 = st.tabs(['Player Used Info', 'Stack Used Info', 'Stack Size Info', 'General Info', 'Duplication Info'])