Add css welcome notice
Add css welcome notice

Signed-off-by: Dmitriy Zaporozhets <be23d75b156792e5acab51b196a2deb155d35d6a@gmail.com>

mmkassem/gitlabhq,mr-dxdy/gitlabhq,SVArago/gitlabhq,openwide-java/gitlabhq,sue445/gitlabhq,ikappas/gitlabhq,ikappas/gitlabhq,screenpages/gitlabhq,jrjang/gitlab-ce,yatish27/gitlabhq,dwrensha/gitlabhq,Telekom-PD/gitlabhq,Datacom/gitlabhq,ksoichiro/gitlabhq,SVArago/gitlabhq,axilleas/gitlabhq,cui-liqiang/gitlab-ce,szechyjs/gitlabhq,MauriceMohlek/gitlabhq,ikappas/gitlabhq,mrb/gitlabhq,iiet/iiet-git,htve/GitlabForChinese,Telekom-PD/gitlabhq,daiyu/gitlab-zh,szechyjs/gitlabhq,iiet/iiet-git,jrjang/gitlab-ce,Soullivaneuh/gitlabhq,jrjang/gitlabhq,ttasanen/gitlabhq,shinexiao/gitlabhq,mrb/gitlabhq,jirutka/gitlabhq,ttasanen/gitlabhq,mr-dxdy/gitlabhq,screenpages/gitlabhq,sue445/gitlabhq,htve/GitlabForChinese,jrjang/gitlabhq,SVArago/gitlabhq,daiyu/gitlab-zh,larryli/gitlabhq,SVArago/gitlabhq,szechyjs/gitlabhq,dplarson/gitlabhq,mr-dxdy/gitlabhq,louahola/gitlabhq,mmkassem/gitlabhq,allysonbarros/gitlabhq,screenpages/gitlabhq,fpgentil/gitlabhq,duduribeiro/gitlabhq,larryli/gitlabhq,t-zuehlsdorff/gitlabhq,ttasanen/gitlabhq,t-zuehlsdorff/gitlabhq,larryli/gitlabhq,htve/GitlabForChinese,yatish27/gitlabhq,mrb/gitlabhq,dplarson/gitlabhq,dreampet/gitlab,t-zuehlsdorff/gitlabhq,jirutka/gitlabhq,mrb/gitlabhq,jrjang/gitlab-ce,shinexiao/gitlabhq,MauriceMohlek/gitlabhq,stoplightio/gitlabhq,htve/GitlabForChinese,ferdinandrosario/gitlabhq,icedwater/gitlabhq,dwrensha/gitlabhq,daiyu/gitlab-zh,shinexiao/gitlabhq,stoplightio/gitlabhq,dwrensha/gitlabhq,axilleas/gitlabhq,Soullivaneuh/gitlabhq,sonalkr132/gitlabhq,ksoichiro/gitlabhq,duduribeiro/gitlabhq,ferdinandrosario/gitlabhq,mmkassem/gitlabhq,koreamic/gitlabhq,sue445/gitlabhq,louahola/gitlabhq,openwide-java/gitlabhq,screenpages/gitlabhq,sonalkr132/gitlabhq,Telekom-PD/gitlabhq,dplarson/gitlabhq,sonalkr132/gitlabhq,allysonbarros/gitlabhq,stoplightio/gitlabhq,darkrasid/gitlabhq,cui-liqiang/gitlab-ce,martijnvermaat/gitlabhq,louahola/gitlabhq,mr-dxdy/gitlabhq,koreamic/gitlabhq,dwrensha/gitlabhq,jrjang/gitlab-ce,ikappas/gitlabhq,jirutka/gitlabhq,ksoichiro/gitlabhq,duduribeiro/gitlabhq,Soullivaneuh/gitlabhq,ferdinandrosario/gitlabhq,dreampet/gitlab,mmkassem/gitlabhq,darkrasid/gitlabhq,martijnvermaat/gitlabhq,openwide-java/gitlabhq,allysonbarros/gitlabhq,darkrasid/gitlabhq,darkrasid/gitlabhq,axilleas/gitlabhq,LUMC/gitlabhq,axilleas/gitlabhq,dreampet/gitlab,icedwater/gitlabhq,koreamic/gitlabhq,icedwater/gitlabhq,yatish27/gitlabhq,sue445/gitlabhq,jrjang/gitlabhq,Telekom-PD/gitlabhq,szechyjs/gitlabhq,larryli/gitlabhq,Datacom/gitlabhq,ksoichiro/gitlabhq,shinexiao/gitlabhq,openwide-java/gitlabhq,louahola/gitlabhq,sonalkr132/gitlabhq,iiet/iiet-git,yatish27/gitlabhq,allysonbarros/gitlabhq,cui-liqiang/gitlab-ce,LUMC/gitlabhq,iiet/iiet-git,Soullivaneuh/gitlabhq,martijnvermaat/gitlabhq,martijnvermaat/gitlabhq,jirutka/gitlabhq,ferdinandrosario/gitlabhq,dplarson/gitlabhq,MauriceMohlek/gitlabhq,cui-liqiang/gitlab-ce,fpgentil/gitlabhq,dreampet/gitlab,t-zuehlsdorff/gitlabhq,Datacom/gitlabhq,koreamic/gitlabhq,fpgentil/gitlabhq,LUMC/gitlabhq,stoplightio/gitlabhq,LUMC/gitlabhq,duduribeiro/gitlabhq,daiyu/gitlab-zh,ttasanen/gitlabhq,icedwater/gitlabhq,fpgentil/gitlabhq,MauriceMohlek/gitlabhq,Datacom/gitlabhq,jrjang/gitlabhq