Refactor WikiPage.group_by_directory
Refactor WikiPage.group_by_directory

LUMC/gitlabhq,t-zuehlsdorff/gitlabhq,mmkassem/gitlabhq,dplarson/gitlabhq,dplarson/gitlabhq,axilleas/gitlabhq,jirutka/gitlabhq,iiet/iiet-git,iiet/iiet-git,htve/GitlabForChinese,t-zuehlsdorff/gitlabhq,axilleas/gitlabhq,darkrasid/gitlabhq,darkrasid/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,t-zuehlsdorff/gitlabhq,t-zuehlsdorff/gitlabhq,dplarson/gitlabhq,darkrasid/gitlabhq,stoplightio/gitlabhq,jirutka/gitlabhq,iiet/iiet-git,axilleas/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,htve/GitlabForChinese,LUMC/gitlabhq,htve/GitlabForChinese,dplarson/gitlabhq,mmkassem/gitlabhq,darkrasid/gitlabhq,dreampet/gitlab,mmkassem/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,iiet/iiet-git,LUMC/gitlabhq,stoplightio/gitlabhq,stoplightio/gitlabhq,LUMC/gitlabhq,stoplightio/gitlabhq,htve/GitlabForChinese,mmkassem/gitlabhq