st.dataframe cannot handle large dataframes

[singjc]

Streamlist's dataframe cannot handle large dataframes, which is a known issue because of how they send data. See: https://github.com/streamlit/streamlit/issues/517

ValueError: Message ForwardMsg exceeds maximum protobuf size of 2GB: 2763555001

Will need to add a widget in the sidebar to optionally download the full data, and only maximally show N rows of data when using st.dataframe to visually show data.