Remove old lib directories when updating from 1.12 -- thanks for fixing the namespace bug too!

- make sure text isn't selected when using multiple series in row evolution popups
- tweak position/height of site selector label
- make sure export as image dialog has border
- fix css bug in morpheus having to do w/ dialog buttons (background was erased on hover)

This reverts commit 91970b0d.

Following error:
PHP Fatal error:  Class 'Piwik\\Tracker\\Common' not found in /var/www/piwik/core/Tracker/ActionClickUrl.php on line 43

Adding |raw to prevent content SMS from being destructed at some point (htmlspecialchars in Twig can be destructive under some php versions)

Refs #4127 Latest updates to theme: form elements themed, line charts, Help icon (looks great!), inline help and other design improvements

Fixes #4371, determine ecommerce status in PHP rather than Twig since {% set %} won't be executed until the set var is used.

http://forum.piwik.org/read.php?2,108176,page=1#msg-108190