Fix for param parsing in search terms.
Fix for param parsing in search terms.

Currently a search for `threat_type:X` matches `type:` first and produces this search: `.../threat_?type=X`
mgoffin/ThreatExchange,theCatWisel/ThreatExchange,tiegz/ThreatExchange,RyPeck/ThreatExchange,tiegz/ThreatExchange,theCatWisel/ThreatExchange,RyPeck/ThreatExchange,theCatWisel/ThreatExchange,wxsBSD/ThreatExchange,wxsBSD/ThreatExchange,arirubinstein/ThreatExchange,mgoffin/ThreatExchange,mgoffin/ThreatExchange,theCatWisel/ThreatExchange,theCatWisel/ThreatExchange,RyPeck/ThreatExchange,wxsBSD/ThreatExchange,wxsBSD/ThreatExchange,mgoffin/ThreatExchange,RyPeck/ThreatExchange,RyPeck/ThreatExchange,mgoffin/ThreatExchange,mgoffin/ThreatExchange,wxsBSD/ThreatExchange,theCatWisel/ThreatExchange,RyPeck/ThreatExchange,tiegz/ThreatExchange,tiegz/ThreatExchange,tiegz/ThreatExchange,tiegz/ThreatExchange,wxsBSD/ThreatExchange