Preserve file information and content while editing it.
Merge branch 'master' of github.com:Kotti/Kotti into fix_file_editing
Move pre-fill file data from extra widget to the before hook of the form, refs #242.
Remove trailing whitespace, pep8 happiness.
Remove trailing whitespace, again.
Move file appstruct enhancement from DocumentEditForm to FileEditForm, refs #242.
Changelog.
Merge pull request #242 from j23d/fix_file_editing

Preserve file information and content while editing it.