Fix github importer to handle empty issues
Fix github importer to handle empty issues

Soullivaneuh/gitlabhq,axilleas/gitlabhq,martijnvermaat/gitlabhq,louahola/gitlabhq,t-zuehlsdorff/gitlabhq,daiyu/gitlab-zh,stoplightio/gitlabhq,iiet/iiet-git,stoplightio/gitlabhq,cui-liqiang/gitlab-ce,larryli/gitlabhq,koreamic/gitlabhq,ferdinandrosario/gitlabhq,allysonbarros/gitlabhq,larryli/gitlabhq,Datacom/gitlabhq,dwrensha/gitlabhq,allysonbarros/gitlabhq,shinexiao/gitlabhq,yatish27/gitlabhq,SVArago/gitlabhq,Datacom/gitlabhq,darkrasid/gitlabhq,yatish27/gitlabhq,ttasanen/gitlabhq,jrjang/gitlab-ce,dwrensha/gitlabhq,yatish27/gitlabhq,openwide-java/gitlabhq,ferdinandrosario/gitlabhq,koreamic/gitlabhq,SVArago/gitlabhq,screenpages/gitlabhq,icedwater/gitlabhq,martijnvermaat/gitlabhq,openwide-java/gitlabhq,mr-dxdy/gitlabhq,allysonbarros/gitlabhq,Soullivaneuh/gitlabhq,mmkassem/gitlabhq,jirutka/gitlabhq,t-zuehlsdorff/gitlabhq,darkrasid/gitlabhq,duduribeiro/gitlabhq,SVArago/gitlabhq,darkrasid/gitlabhq,yatish27/gitlabhq,jrjang/gitlabhq,mrb/gitlabhq,dwrensha/gitlabhq,iiet/iiet-git,dreampet/gitlab,Soullivaneuh/gitlabhq,icedwater/gitlabhq,ikappas/gitlabhq,jirutka/gitlabhq,screenpages/gitlabhq,shinexiao/gitlabhq,ikappas/gitlabhq,screenpages/gitlabhq,koreamic/gitlabhq,larryli/gitlabhq,dreampet/gitlab,LUMC/gitlabhq,ferdinandrosario/gitlabhq,jrjang/gitlab-ce,dplarson/gitlabhq,jrjang/gitlabhq,t-zuehlsdorff/gitlabhq,mr-dxdy/gitlabhq,SVArago/gitlabhq,Datacom/gitlabhq,stoplightio/gitlabhq,jrjang/gitlabhq,dwrensha/gitlabhq,icedwater/gitlabhq,stoplightio/gitlabhq,axilleas/gitlabhq,htve/GitlabForChinese,duduribeiro/gitlabhq,ttasanen/gitlabhq,cui-liqiang/gitlab-ce,axilleas/gitlabhq,t-zuehlsdorff/gitlabhq,martijnvermaat/gitlabhq,LUMC/gitlabhq,mr-dxdy/gitlabhq,mmkassem/gitlabhq,ferdinandrosario/gitlabhq,openwide-java/gitlabhq,koreamic/gitlabhq,ttasanen/gitlabhq,daiyu/gitlab-zh,cui-liqiang/gitlab-ce,htve/GitlabForChinese,larryli/gitlabhq,axilleas/gitlabhq,Soullivaneuh/gitlabhq,ttasanen/gitlabhq,icedwater/gitlabhq,jirutka/gitlabhq,jirutka/gitlabhq,dreampet/gitlab,mrb/gitlabhq,louahola/gitlabhq,htve/GitlabForChinese,iiet/iiet-git,louahola/gitlabhq,dplarson/gitlabhq,htve/GitlabForChinese,screenpages/gitlabhq,cui-liqiang/gitlab-ce,ikappas/gitlabhq,jrjang/gitlabhq,jrjang/gitlab-ce,darkrasid/gitlabhq,mr-dxdy/gitlabhq,duduribeiro/gitlabhq,dreampet/gitlab,shinexiao/gitlabhq,iiet/iiet-git,mrb/gitlabhq,dplarson/gitlabhq,dplarson/gitlabhq,duduribeiro/gitlabhq,LUMC/gitlabhq,daiyu/gitlab-zh,mmkassem/gitlabhq,mrb/gitlabhq,openwide-java/gitlabhq,allysonbarros/gitlabhq,shinexiao/gitlabhq,Datacom/gitlabhq,louahola/gitlabhq,mmkassem/gitlabhq,LUMC/gitlabhq,daiyu/gitlab-zh,ikappas/gitlabhq,jrjang/gitlab-ce,martijnvermaat/gitlabhq