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

git-svn-id: http://svn.redmine.org/redmine/trunk@12505 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#first with finder options at BoardsControllerTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12506 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#first with finder options at DocumentsControllerTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12507 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#first with finder options at GroupsControllerTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12508 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#first with finder options at IssueCategoriesControllerTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12509 e93f8b46-1217-0410-a6f0-8f06a7374b81