Update Issue Board API to handle with has_many association
Update Issue Board API to handle with has_many association

daiyu/gitlab-zh,dplarson/gitlabhq,iiet/iiet-git,dplarson/gitlabhq,screenpages/gitlabhq,jirutka/gitlabhq,darkrasid/gitlabhq,LUMC/gitlabhq,screenpages/gitlabhq,axilleas/gitlabhq,shinexiao/gitlabhq,screenpages/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,dplarson/gitlabhq,darkrasid/gitlabhq,LUMC/gitlabhq,LUMC/gitlabhq,stoplightio/gitlabhq,shinexiao/gitlabhq,stoplightio/gitlabhq,t-zuehlsdorff/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,htve/GitlabForChinese,jirutka/gitlabhq,darkrasid/gitlabhq,openwide-java/gitlabhq,openwide-java/gitlabhq,htve/GitlabForChinese,screenpages/gitlabhq,dreampet/gitlab,iiet/iiet-git,stoplightio/gitlabhq,openwide-java/gitlabhq,iiet/iiet-git,htve/GitlabForChinese,darkrasid/gitlabhq,daiyu/gitlab-zh,htve/GitlabForChinese,daiyu/gitlab-zh,dplarson/gitlabhq,t-zuehlsdorff/gitlabhq,daiyu/gitlab-zh,axilleas/gitlabhq,mmkassem/gitlabhq,mmkassem/gitlabhq,shinexiao/gitlabhq,iiet/iiet-git,axilleas/gitlabhq,openwide-java/gitlabhq,stoplightio/gitlabhq,mmkassem/gitlabhq,dreampet/gitlab,shinexiao/gitlabhq,t-zuehlsdorff/gitlabhq,jirutka/gitlabhq,t-zuehlsdorff/gitlabhq,mmkassem/gitlabhq,LUMC/gitlabhq