Fixing detection of abstract contract
Fixing detection of abstract contract

arkpar/solidity,shahankhatch/solidity,debris/solidity,LefterisJP/solidity,douglas-larocca/solidity,chriseth/solidity-doc-test,ruchevits/solidity,ruchevits/solidity,ruchevits/solidity,ruchevits/solidity,chriseth/solidity,gluk256/solidity,vaporry/solidity,LianaHus/solidity,ethers/solidity