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

git-svn-id: http://svn.redmine.org/redmine/trunk@12549 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#first with finder options at CipheringTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12550 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#first with finder options at MailHandlerTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12551 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#update_all at ProjectNestedSetTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12552 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#update_all at WatcherTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12553 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#update_all at ProjectTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12554 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#update_all at QueryTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12555 e93f8b46-1217-0410-a6f0-8f06a7374b81