remove addExisting function from JS
add modal to select existing image for imagelist
Use doctrine/dbal 2.4-dev which is needed for dbcheck/dbupdate and postgresql
Merge pull request #415 from sidneywidmer/master

improve 'Add existing image' for imagelists
Merge pull request #414 from richardhinkamp/doctrine-version-postgres

Use doctrine/dbal 2.4-dev which is needed for dbcheck/dbupdate and postgresql
Consistently using $app['foo']->bar. Ref. #360
Make sure 'date' and 'datetime' fields are initialised properly. Partial fix for #388
Adding defaults to 'date' and 'datetime' in contenttype.yml.dist for kitchensink. Fixes #388.