added documentation to runner_client files and cleaned them up

Added documentation to: 

runner_client/VenusClientLibrary.js
runner_client/VenusTestList.js
runner_client/VenusUi.js
runner_client/console.log.js
runner_client/venus.js

and did a little bit of clean. Wherever I changed the structure of something, I ensured that whatever was referencing it before my change still worked.