Minor fix in wide row generator
Merge branch 'nextgen' of https://github.com/NCIP/catissue-dynamic-extensions into nextgen
Advance Query: Added Shallow Wide Row Generator. Made Shallow Wide Row Generator as default wide rows generator. TODO: Add a switch and config param to specify the type of wide rows
Merge branch 'nextgen' of https://github.com/NCIP/catissue-dynamic-extensions into nextgen