Bug#785269: Figured out.

I got it to work. You were correct in stating: How do you have configured the Apache↔PHP interface? You most likely do so via libapache2-mod-php5; if so, editing /etc/php5/cli/php.ini will have no effect, you have to edit /etc/php5/apache2/php.ini In /etc/php5/apache2/php.ini this file I uncomme

Bug#785269: drupal7: Can't setup: Unicode library Error. Check php.ini mbstring.http_input setting

Package: drupal7 Version: 7.32-1+deb8u3 Severity: grave Tags: upstream Justification: renders package unusable Dear Maintainer, *** Reporter, please consider answering these questions, where appropriate *** * What led up to the situation? * What exactly did you do (or not do) that was effe