add REST documentation for uservoice module
add REST documentation for uservoice module

jfederico/Hilary,timdegroote/Hilary,simong/Hilary,timdegroote/Hilary,ExC0d3/Hilary,jfederico/Hilary,nicolaasmatthijs/Hilary,Orodan/Hilary,mrvisser/Hilary,stuartf/Hilary,Orodan/Hilary,nicolaasmatthijs/Hilary,ExC0d3/Hilary,mrvisser/Hilary,simong/Hilary,stuartf/Hilary