Fixed imports (added 'sys'), changed logging slightly
Fixed imports (added 'sys'), changed logging slightly

konradjk/exac_browser,pontikos/uclex_browser,macarthur-lab/gnomad_browser,konradjk/exac_browser,konradjk/exac_browser,macarthur-lab/gnomad_browser,pontikos/uclex_browser,hms-dbmi/exac_browser,hms-dbmi/exac_browser,macarthur-lab/gnomad_browser,hms-dbmi/exac_browser,pontikos/uclex_browser,macarthur-lab/gnomad_browser,macarthur-lab/gnomad_browser,pontikos/uclex_browser,pontikos/uclex_browser