language update refs #3430
Merge pull request #79 from piwik/translationupdates

- automatic translation update
- added new languages Tamil and Hindi
Reverting change made in f9aca379198b61165a7ca201bfe058313378ec5d as it breaks site selector in some cases.
Make sure default event handler is not fired when site is selected in site selector.
Merge remote-tracking branch 'origin/master' into 2.x-twig
Removing Smarty strings from codebase, fixing install
Adding twig to LEGALNOTICE
Refs #4019