Changed the way files are adressed as web resources:
Before this change, files were found by name only, regardless of their folder path.
After this change, a file is only found if the URL path and the folder path of the file in the Structr repo matches.
IMPORTANT NOTICE: If you were lazy in the past (like I was) and adressed files and images by name only, your Structr pages may look strange now.
Use ${link.path} instead of ${link.name} or /${link.name}, and you can append \?${link.version} to refresh the browser's cache on each new version.
Improved web resource selection dialog to match latest changes in path resolution.