Rails4: replace hard-coded html with class at ApplicationHelperTest#test_link_to_user

See r12784 comment.

git-svn-id: http://svn.redmine.org/redmine/trunk@12826 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace hard-coded html with class at ApplicationHelperTest#test_link_to_user_should_link_to_locked_user_if_current_user_is_admin

See r12784 comment.

git-svn-id: http://svn.redmine.org/redmine/trunk@12827 e93f8b46-1217-0410-a6f0-8f06a7374b81
Rails4: replace hard-coded html with class at ApplicationHelperTest#test_pre_content_should_not_parse_wiki_and_redmine_links

See r12784 comment.

git-svn-id: http://svn.redmine.org/redmine/trunk@12828 e93f8b46-1217-0410-a6f0-8f06a7374b81