Nowrap for all header elements; add .nowrap mixin to h1-h4
Nowrap for all header elements; add .nowrap mixin to h1-h4

mariansollmann/CM,tomaszdurka/CM,fauvel/CM,fvovan/CM,christopheschwyzer/CM,zazabe/cm,alexispeter/CM,vogdb/cm,vogdb/cm,mariansollmann/CM,fauvel/CM,mariansollmann/CM,christopheschwyzer/CM,cargomedia/CM,tomaszdurka/CM,vogdb/cm,vogdb/cm,alexispeter/CM,fvovan/CM,cargomedia/CM,njam/CM,fauvel/CM,cargomedia/CM,tomaszdurka/CM,tomaszdurka/CM,fauvel/CM,tomaszdurka/CM,njam/CM,njam/CM,christopheschwyzer/CM,njam/CM,alexispeter/CM,christopheschwyzer/CM,zazabe/cm,fauvel/CM,mariansollmann/CM,cargomedia/CM,njam/CM,zazabe/cm,zazabe/cm,vogdb/cm,fvovan/CM,fvovan/CM,alexispeter/CM