python-webpy: security bump to version 0.39

python-webpy: security bump to version 0.39

>From the changelog:

2018-02-28 0.39
* Fixed a security issue with the form module (tx Orange Tsai)
* Fixed a security issue with the db module (tx Adrián Brav and Orange Tsai)

2016-07-08 0.38
..
* Fixed a potential remote exeution risk in `reparam` (tx Adrián Brav)

License files are still not included on pypi, so continue to use the git
repo. Upstream has unfortunately not tagged 0.39, so use the latest commit
on the 0.39 branch.  A request to fix this has been submitted:

https://github.com/webpy/webpy/issues/449

0.39 now uses setuptools, so change the _SETUP_TYPE.

Add hashes for the license files.

Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>