Add case for clear console action in ui reducer.
Add case for clear console action in ui reducer.

jwang1919/popcode,outoftime/learnpad,popcodeorg/popcode,popcodeorg/popcode,jwang1919/popcode,outoftime/learnpad,jwang1919/popcode,popcodeorg/popcode,popcodeorg/popcode,jwang1919/popcode