add min-heights for all longform teaser formats to fake it on FF52+, IE11
add min-heights for all longform teaser formats to fake it on FF52+, IE11

SRFCMSAL-1149

mmz-srf/srf-frontend-framework,mmz-srf/srf-frontend-framework,mmz-srf/srf-frontend-framework,mmz-srf/srf-frontend-framework