Change submission language

[jyhein]

Change the submission language after submission

Show the language of the submission in the workflow page and the author dashboard

In the modal window editors can change the language and add/edit required metadata

The submission's metadata can be edited even if the submission's locale is not one of the currently supported submission locales

The language of the submission can not be changed if the status of the publication is published or there are more than one version

[CLAassistant]

All committers have signed the CLA.