Don't throw an error for notices after the contenttype has been removed.
Updating for Symfony 2.3.5
Merge branch 'master' of github.com:bolt/bolt
Some modifications to "file upload" in files screen. Ref #608

Some changes to the file upload addition by @leonbobster.

- Notifications for succes / failure
- Whitespace fixes
- Proper redirect, back to the current page
- Location of form on the bottom of the page, better formatted.
- Only show the file-upload form, if the folder is writable to the
webuser.