controller: `utils.rb` check clients system date before login
i18n: `trst.yml` v0.2.13 related translations
assets: js, `Trst.login` check clients system date before login
assets: js, `Trst.publish` keep error messages visible for 5s
views: `utils/login.haml` check clients system date before login
uodate CHANGELOG
bump version v0.2.13
Merge branch 'hotfix/v0.2.13'