Downloaded PSHDL files contain JSON array instead of PSDHL code

[Henning Holm]

The file downloads of single PSHDL files contain a JSON array with some meta information of the file instead of its proper content.

Download of PSHDL files is currently only possible through the "Download workspace from file" button on the Synthesize tab.

[Karsten Becker]

Chances are that the Accept header was not set, or set incorrectly, which causes Jersey to default to the JSON representation. It is however now possible to attach plain=true to the URL and you will always get a plain/text representation.

[Karsten Becker]

Problem was in Dart Editor, is now fixed