Latest translations from transifex.
Merge branch 'hotfix/0.7.0.4'
Upgrade to Rails 2.3.18 to get fixes for CVE-2013-1855, CVE-2013-1856, CVE-2013-1857.
Merge branch 'hotfix/0.7.0.5' into release/0.8

Conflicts:
    Gemfile.lock
    locale/cy/app.po
    locale/fr/app.po
    locale/he_IL/app.po
    locale/id/app.po
    locale/pt_BR/app.po
    locale/ro_RO/app.po
    locale/sr@latin/app.po
    locale/uk/app.po