Set locale as expected.

git-svn-id: http://svn.redmine.org/redmine@13444 e93f8b46-1217-0410-a6f0-8f06a7374b81
Don't store instance ids in class variables.

git-svn-id: http://svn.redmine.org/redmine@13445 e93f8b46-1217-0410-a6f0-8f06a7374b81
remove Ruby 1.9.2 from .travis.yml

Rails4 dropped Ruby 1.9.2 support.

git-svn-id: http://svn.redmine.org/redmine@13446 e93f8b46-1217-0410-a6f0-8f06a7374b81