integrated_image formtype is broken in 0.7
Description
Steps to reproduce
Go to /admin/channel/new
Result: Exception
I expect the merge of to be the reason, but I am not sure (version 0.6 does not have this problem). Maybe it is because Symfony 2.8 needs the FQCN (https://github.com/symfony/symfony/blob/2.8/UPGRADE-2.8.md#form).
Deployment actions
None
Technical tasks
None
Fixed
Assignee
Client
External issue ID
None
Min. hours
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Dev hour estimate
None