paypro: refactor extension parsing.
paypro: refactor extension parsing.

KainiIndustries/hullcore,iobond/bitcore,jcvernaleo/bitcore,habibmasuro/reddcore,habibmasuro/reddcore,pembo210/Litecore,martindale/bitcore,bilthon/bitcore,UdjinM6/darkcore,MonetaryUnit/bitcore,janko33bd/bitcore,MulticoinExplorer/bitcore,KainiIndustries/hullcore,initaldk/bitcore,habibmasuro/reddcore,TOMOAKI12345/bitcore,phplaboratory/bitcore,braydonf/bitcore,pembo210/Litecore,Kefkius/clamcore,janko33bd/bitcore,KainiIndustries/hullcore,lekkas/bitcore,adjoinant/bitcore,casinocoin/csc-bitcore-v0.1,daxxog/clamcore,Kefkius/clamcore,casinocoin/csc-bitcore-v0.1,litecoin-project/litecore,casinocoin/csc-bitcore-v0.1,pembo210/Litecore,TeamPiggyCoin/PiggyCore,bilthon/bitcore,MonetaryUnit/bitcore,casinocoin/csc-bitcore-v0.1,bitjson/bitcore,bitpay/bitcore,genecyber/bitcore,MulticoinExplorer/bitcore,martindale/bitcore,TOMOAKI12345/bitcore,litecoin-project/litecore,bitjson/bitcore,maraoz/coinforge,MulticoinExplorer/bitcore,genecyber/bitcore,KainiIndustries/hullcore,GroestlCoin/groestlcore,UdjinM6/darkcore,TeamPiggyCoin/PiggyCore,bitjson/bitcore,williamcotton/bitcore,pnagurny/bitcore,lekkas/bitcore,Kefkius/clamcore,bitpay/bitcore,iobond/bitcore,casinocoin/csc-bitcore-v0.1,jcvernaleo/bitcore,iobond/bitcore,iobond/bitcore,eordano/bitcore,UdjinM6/bitcore-dash,bankonme/bitcore,braydonf/bitcore,MulticoinExplorer/bitcore,UdjinM6/darkcore,daxxog/clamcore,Kefkius/clamcore,williamcotton/bitcore,casinocoin/csc-bitcore-v0.1,adjoinant/bitcore,bitpay/bitcore,martindale/bitcore,UdjinM6/darkcore,KainiIndustries/hullcore,maraoz/coinforge,pembo210/Litecore,bankonme/bitcore,MulticoinExplorer/bitcore,UdjinM6/darkcore,olalonde/bitcore,habibmasuro/reddcore,UdjinM6/darkcore,phplaboratory/bitcore,iobond/bitcore,initaldk/bitcore,olalonde/bitcore,KainiIndustries/hullcore,eXcomm/bitcore,martindale/bitcore,bitpay/bitcore,eordano/bitcore,pnagurny/bitcore,eXcomm/bitcore,bitjson/bitcore,Kefkius/clamcore,habibmasuro/reddcore