Patch version 0.15.2
Patch version 0.15.2

Grammatical and spelling error updates (along with new translation
files).

openspending/spendb,nathanhilbert/FPA_Core,USStateDept/FPA_Core,johnjohndoe/spendb,spendb/spendb,CivicVision/datahub,pudo/spendb,nathanhilbert/FPA_Core,nathanhilbert/FPA_Core,USStateDept/FPA_Core,USStateDept/FPA_Core,pudo/spendb,CivicVision/datahub,johnjohndoe/spendb,openspending/spendb,johnjohndoe/spendb,openspending/spendb,spendb/spendb,CivicVision/datahub,spendb/spendb,pudo/spendb