python-paramiko: Update to version 0.11.0.

This also now uses the md5 istead of the sha256, because pypi actually
directly provides MD5 sums.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
python-paramiko: Propagate pycrypto dependency.

Leaving this just in buildInputs won't help here, because the project
using Paramiko will need pycrypto in any case.

Signed-off-by: aszlig <aszlig@redmoonstudios.org>
chromium: Update stable and dev release channels.

This introduces the following new versions:

stable: 28.0.1500.71 -> 28.0.1500.95 (builds fine, tested)
dev:    30.0.1573.2  -> 30.0.1581.2  (builds fine, tested)

Signed-off-by: aszlig <aszlig@redmoonstudios.org>