REST API, Filename encoding
- In the REST API there were problems with URL encoded requests (in the request path only, URL parameter have been decoded fine already)
- RFC 822 states that it is not allowed to transfer characters with ASCII >127 in MIME headers. Therefor a encoding has been added for the filename transfer in the attachment header where this is required (see RFC 2047). Means it should work now to transfer filenames that contain special characters. Anyway if the receiver will process the filename somehow he has to decode it after RFC 2047.