v1.3.0 release hotfixes

• I changed that the all shared uploads are shown in every users upload list. I got an email from an alarmed user that was confused that he suddenly had more uploads that he did not know about. I think it is also not practical that your own upload list is "spammed" with public uploads.

• I also shared "Visible for all" to "Publicly visible". I have not talked to the users yet, but I have a suspicion that they did this unintentionally and were confusing the all in "Visible for all" with "all the coauthors" I just selected below.

• Fixed the used request version to be compatible with current jupyterhub.