Refactoring user agent check and whitelisting Sia-Explorer agent
Refactoring user agent check and whitelisting Sia-Explorer agent

NebulousLabs/Sia,rivine/rivine,johnathanhowell/Sia,NebulousLabs/Sia,rivine/rivine,mtlynch/Sia,mnsl/Sia,MrStrong/Sia,Mingling94/Sia,mtlynch/Sia,mharkus/Sia,MrStrong/Sia,mharkus/Sia,ericflo/Sia,ChrisSchinnerl/Sia,mnsl/Sia,ericflo/Sia,ChrisSchinnerl/Sia