Only preview gif, png and jpeg images. Fixes #181
Only preview gif, png and jpeg images. Fixes #181
escaleno-ltda/bootstrap,escaleno-ltda/bootstrap,SecureCloud-biz/bootstrap,GerHobbelt/bootstrap,GerHobbelt/bootstrap,mkoryak/bootstrap-1,mkoryak/bootstrap-1,avishayhajbi/bootstrap,SecureCloud-biz/bootstrap,mkoryak/bootstrap-1,avishayhajbi/bootstrap,mkoryak/bootstrap-1,GerHobbelt/bootstrap,avishayhajbi/bootstrap,escaleno-ltda/bootstrap,escaleno-ltda/bootstrap,SecureCloud-biz/bootstrap,SecureCloud-biz/bootstrap,avishayhajbi/bootstrap