SW-17699 Add missing classes-block to content-main element
SW-17699 Add missing classes-block to content-main element

Closes https://github.com/shopware/shopware/pull/937

egoistIT/shopware,egoistIT/shopware,simkli/shopware,k10r/shopware,oktupol/shopware,k10r/shopware,philippmahlow/shopware,simkli/shopware,jochenmanz/shopware,jhit/shopware,egoistIT/shopware,jochenmanz/shopware,oktupol/shopware,jhit/shopware,oktupol/shopware,philippmahlow/shopware,simkli/shopware,simkli/shopware,jhit/shopware,jochenmanz/shopware,oktupol/shopware,jochenmanz/shopware,jochenmanz/shopware,simkli/shopware,jhit/shopware,philippmahlow/shopware,k10r/shopware,oktupol/shopware,egoistIT/shopware,k10r/shopware,philippmahlow/shopware,philippmahlow/shopware,jhit/shopware,k10r/shopware,egoistIT/shopware