notebook improvements

[@amor71]

1. move code to Python
2. add full examples in the documentation
3. simplify, remove redundant code
4. code clean-up

[@amor71]

for release 0.0.60

[@amor71]

1. re-implement analytics w/ streamlit
2. create dockerfile and updated documentation

for release 0.0.60

[@amor71]

streamlit and cleanup completed for portfolio analysis

[@amor71]

backtester still in process