fix: append PORT to URL_PREFIX only if WHYD_URL_PREFIX is not provided (#198)
fix: append PORT to URL_PREFIX only if WHYD_URL_PREFIX is not provided (#198)

cf https://github.com/openwhyd/openwhyd/commit/cc3af51b2d24e98d24e10583add56ab83bd535de#commitcomment-33865126
openwhyd/openwhyd,openwhyd/openwhyd,openwhyd/openwhyd,openwhyd/openwhyd,openwhyd/openwhyd