running test doesn't work currently because of finding qt plugins

Co-Authored-By: Quiark <me@rplasil.name>

* python3Packages.papis: provides as a library too

The project is turning into a dependency for several scripts and possibly UIs
(see the different repositories at https://github.com/papis/) so it makes sense
to have it as a library.

* moved papis to python-modules

* add myself as maintainer

keepassxc: 2.3.4 -> 2.4.0

sstp: 1.0.11 -> 1.0.12

 snakemake: 5.2.2 -> 5.4.4

The hash used for fetchFromGitHub was on the archive itself, however
fetchFromGitHub is actually a wrapper of fetchzip:

hash mismatch in fixed-output derivation '...-source':
  wanted: sha256:1zqx3p9l22njni44ads3fyw3xh6807wmb5k1x2glg61z81cwc6sf
  got:    sha256:08lnq5wmspfqdjmqm15gizcq0xr7mg4h62qhvwj63v0sd6ks1cal

When using nix-prefetch-url without the --unpack argument, I get:

1zqx3p9l22njni44ads3fyw3xh6807wmb5k1x2glg61z81cwc6sf

And with the --unpack argument:

08lnq5wmspfqdjmqm15gizcq0xr7mg4h62qhvwj63v0sd6ks1cal

Just to be 100% sure the contents are the same, I also diffed the
contents of the former tarball with the outputs of the unpacked dir and
they're the same.

I didn't actually test the package (which doesn't build right now
anyway), but now at least the source checksum is fixed :-)

Signed-off-by: aszlig <aszlig@nix.build>
Cc: @matthiasbeyer

as suggested in the comment.