Merge branch 'hotfix/fixed-activation-mail'
use jquery to add css class
don't set container overflow to hidden, removed unneeded $() wrap
removed global overflow:hidden
bugfix: exposed global variable
theme's and visualizations store their own id
after bugfix, global vis is not defined
fixed global namespace
column charts now set overflow to hidden
after bugfix: global vis is not defined
Merge branch 'hotfix/fix-chart-overflow' into develop
Merge branch 'develop' of github.com:datawrapper/datawrapper into develop