remove unneeded Relation#all from RepositoriesHelper#render_changeset_changes

git-svn-id: http://svn.redmine.org/redmine/trunk@12604 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#first with finder options at ApiTest::ProjectsTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12605 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#first with finder options at ApiTest::TimeEntriesTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12606 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace deprecated Relation#first with finder options at ApiTest::UsersTest

git-svn-id: http://svn.redmine.org/redmine/trunk@12607 e93f8b46-1217-0410-a6f0-8f06a7374b81