implemented tool to download uploaded documents for profile
- description field of attachments is tested for constant descriptors to identify files that the user uploaded himself
- test of description does not yet apply for actual download link but only for overview page

reshaped DevBundle
- different dev routes are now in config file of DevBundle
- included overview page of different tests

TODO:
- include download functionality for EP
- test whether attachment is public for individual file download
- organize and test different test cases (for those that might still be needed)