not install importer when theme unit tests is unused
not install importer when theme unit tests is unused

vccw-team/vccw,marushu/vccw,mimosafa/vccw,marushu/vccw,mimosafa/vccw,marushu/vccw,vccw-team/vccw,vccw-team/vccw,mimosafa/vccw