Extract new list position validation to a method
Extract new list position validation to a method

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