The button to create a new attachment with the Collabora editor should be more explicit about what it does

[lucaa]

Currently the button says simply "new file", with the Collabora logo, displayed under the list of attachments of the page.

The name should be more explicit, it should mention that a new office file will be created, and Collabora editor should be mentioned in the tooltip. The risk otherwise is that there is a confusion between the "new file" and the "upload" button for attachments.