using custom session handler to store sessions in database

please add the following table:

CREATE TABLE `session` (
  `session_id` varchar(32) NOT NULL default '',
  `date_created` datetime NOT NULL default '0000-00-00 00:00:00',
  `last_updated` datetime NOT NULL default '0000-00-00 00:00:00',
  `session_data` longtext,
  PRIMARY KEY  (`session_id`),
  KEY `last_updated` (`last_updated`)
) ENGINE=MyISAM;
Added checkbox "remember login"
updated German translation
disabled caching during chart publication
disabled caching on all pages
ensuring that 2nd column in custom color picker won't break
merge with master branch
removed link "help Datawrapper to understand your data"
corrected config template
using JS instead of CSS for chart menu animation
making sure the chart menu stays above footer
moved chart menu JS to utils.twig
moved chart menu template to it's own file
minor tweaks in guardian theme
removed chart menu, added fullscreen button
forcing fullscreen with ?fs=1, publishing fs.html
minor fox
minor fix
no scrollbars in fullscreen
merged with master