Add boolean to set/remove/rename in storage
Add boolean to set/remove/rename in storage

soad003/browser-solidity,ethereum/browser-solidity,soad003/browser-solidity,serapath-contribution/browser-solidity,Yann-Liang/browser-solidity,Yann-Liang/browser-solidity,Yann-Liang/browser-solidity,serapath-contribution/browser-solidity,serapath-contribution/browser-solidity,soad003/browser-solidity,ethereum/browser-solidity