when a file with whitespaces in the name is stored in a workspace, when it is retrieved from the template, it cannot be found because the URL is not generated propertly.

Steps to reproduce(demoauthor):
1. Go to Configurations app and add a new Dam upload filed (fileUpload.xml) to the tours app. (/modules/tours/apps/tours/subApps/detail/editor/form/tabs/tour/fields).
2. Go to Tours App and upload a file whitespaces in its name (for example to /magnolia-travels/Vietnam--Tradition-and-Today).
3. Add the following code to a tempate (for instance to html component in mtk)

<a href="${cmsfn.link(cmsfn.contentByPath('/magnolia-travels/Vietnam--Tradition-and-Today/photo', 'tours'))}">My file</a>

4. Go to pages app and use Basic template to create a page. Add and HTML component to this page.

Expected: link to the file you have uploaded.
Actual result: 404 error page.