fix relative_url_root support for webpack chunks
fix relative_url_root support for webpack chunks

dreampet/gitlab,stoplightio/gitlabhq,jirutka/gitlabhq,t-zuehlsdorff/gitlabhq,axilleas/gitlabhq,jirutka/gitlabhq,jirutka/gitlabhq,stoplightio/gitlabhq,iiet/iiet-git,stoplightio/gitlabhq,mmkassem/gitlabhq,t-zuehlsdorff/gitlabhq,iiet/iiet-git,dreampet/gitlab,axilleas/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab,mmkassem/gitlabhq,jirutka/gitlabhq,axilleas/gitlabhq,iiet/iiet-git,mmkassem/gitlabhq,axilleas/gitlabhq,t-zuehlsdorff/gitlabhq,iiet/iiet-git,t-zuehlsdorff/gitlabhq,dreampet/gitlab