enabled CM_PagingSource_Sql to handle unions
enabled CM_PagingSource_Sql to handle unions

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