Add manual upload dialog for (demodulated) data
Currently manually decoded data (e.g. SSTV images) can only be uploaded via the API. Instead it is currently posted in the forum.
By providing an upload form/dialog/button for data, this could be resolved (altough a main objective of SatNOGS is to provide a solution to automate the decoding and distribution of data).
(only the station owner should have the permission to upload manually, like it's currently also done for API uploads?)