enter key binding to search button

app.py

@@ -78,13 +78,13 @@ def go_to_previous_page():
         st.session_state.page_number -= 1
 
 def perform_search(min_results=6):
-    print("TRACE 4: perform_search called")
+    # print("TRACE 4: perform_search called")
     if st.session_state.search_box:
         print(f"TRACE 5: Searching for: {st.session_state.search_box}")
         with st.spinner('Searching...'):
             wrapper.literal_text_search(filter_str=st.session_state.search_box, min_results=min_results)
             st.session_state.page_number = 1
-    else:
+    else:  
         print("TRACE 6: No search text in perform_search")
 
 def perform_id_filtering():