Add i18n support (close #156)

Also closes #34, closes #109 and closes #116.

Squashed commit of the following:

commit 8a6b2cfc6fbc32780dc94b17cb62285ee442bc8b
Author: Julien Biezemans <jb@jbpros.com>
Date:   Wed Mar 5 16:11:41 2014 +0100

    Bump TCK

commit 1a3c684d2d737d9dfff4cf6d95b923911f520ad0
Merge: 0beabd4 98a2725
Author: Julien Biezemans <jb@jbpros.com>
Date:   Wed Mar 5 16:05:11 2014 +0100

    Merge branch 'master' into i18n

commit 0beabd409eb35c257d1eef24b5c49bfb7d071dde
Author: Lukas Degener <l.degener@tarent.de>
Date:   Tue Sep 10 21:41:34 2013 +0200

    more flexible regexp for detecting language

commit b10728638c93ba7ef86f0d02b4a43a6ad52fc0db
Author: Brian Clozel <brian.clozel@gmail.com>
Date:   Wed Mar 20 18:26:40 2013 +0100

    update specs for i18n support

commit 6fa8f93466da4535937ebbcd56a2d0a9e84874a9
Author: Brian Clozel <brian.clozel@gmail.com>
Date:   Wed Mar 20 18:25:04 2013 +0100

    used a modified patch made by @vslinko - see #109