PDF Export button gets an extra PDF icon

[maxime-rainville]

The CW-PDFexport module adds a "Export PDF" button. The module caches the PDF so the next user can just get the cached PDF version. When the PDF is already cached, the URL ends with ".PDF" which triggers some CSS to add a PDF icon next to the button which looks weird.

Here's the applicable CSS rule.

[maxime-rainville]

The actual problem is in starter I think https://github.com/silverstripe/cwp-starter-theme/blob/752809503378051515b5343fd5dd29901e65a75b/src/scss/typography.scss#L279-L287