Prevent exceptions when logging resource paths

Logging resource paths with org.springframework.core.io.Resource#getURI can fail on Windows development environments in some cases. To prevent such exceptions, log statements have been changed to just use the implicit toString().

(CMS-23900)

HeadlessServer: More tolerant request handling for invalid hashes on MediaController

Previously the validation on the MediaController denied requests with wrong or outdated hashes. HeadlessServer now accepts requests with wrong or outdates hashes as long as the rest of the url parameters are conclusive (id, crop name, filename, width). If this is the case HeadlessServer now responds with a HTTP 301 / Moved Permanently to the correct URL of the corresponding media, instead of a HTTP 401 / Not Found.

(CMS-23595)