The upload form should have a "Save as:" box which would default to the name of
the selected file. For security and usability reasons, it should NOT be possible
to change the extension.

Upload file: [Bla.jpg ] [ Browse ]
Save as: [Sunrise in Turin ].jpg

The "Save as" could be set with a JavaScript after a file is selected. If no JS
is available or the field is left blank for another reasons, the normal filename
would be used.

Rationale: People often upload files from local collections that do not follow
naming conventions. This makes it easier for them to do so.

Version: 1.5.x
Severity: enhancement