Rails4: replace deprecated Relation#first with finder options at IssueCategoryTest

--HG--
extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012525
Rails4: replace deprecated Relation#update_all at acts_as_list

--HG--
extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012526
Rails4: replace deprecated Relation#update_all at IssueTest

--HG--
extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012527
Rails4: replace deprecated Relation#update_all at Issue model

--HG--
extra : convert_revision : svn%3Ae93f8b46-1217-0410-a6f0-8f06a7374b81/trunk%4012528