Improve filter reset functionality in app.py

- Added a new button to reset filters while preserving essential session state keys, enhancing user control over displayed data.
- Introduced a clearer layout for the filter options, improving the user interface and overall experience.

app.py

@@ -266,8 +266,15 @@ with tab2:
     if 'display_contest_info' in st.session_state:
         with st.expander("Info and filters"):
             st.info("Note that any filtering here needs to be reset manually, i.e. if you parse down the specific users and want to reset the table, just backtrack your filtering by setting it back to 'All'")
-            if st.button('Clear data', key='reset3'):
-                st.session_state.clear()
+            clear_col, reset_col, blank_col = st.columns(1, 1, 8)
+            with clear_col:
+                if st.button('Clear data', key='reset3'):
+                    st.session_state.clear()
+            with reset_col:
+                if st.button('Reset filters', key='reset4'):
+                    for key in st.session_state.keys():
+                        if key not in ['Contest', 'Contest_file', 'Contest_upload', 'player_info', 'info_maps']:
+                            del st.session_state[key]
 
             with st.form(key='filter_form'):
                 users_var, entries_var, stack_var, stack_size_var, player_var, remove_var = st.columns(6)