Revert "Bump version of the grunt-contrib-imagemin"
Revert "Bump version of the grunt-contrib-imagemin"

This reverts commit 7e76164bf08a9c76203d0afa47cf62f201fae0bf.

opennode/waldur-homeport,opennode/waldur-homeport,opennode/waldur-homeport,opennode/waldur-homeport