prewikka-4.0.0-bp150.2.4

- Fix building prewikka with new find-lang.sh

- Update to 4.0.0
- Create python2-prewikka and python3-prewikka
  packages since prewikka is python 3 compatible
- Move to Python Singlespec
- Remove patch prewikka-ez_setup.patch because we can only be
  compatible with Factory/Tumbleweed because of Python Singlespec
- Add patch prewikka-fix_python3.patch to make prewikka fully
  compatible with Python 3

- Update to 3.1.0 (Prelude 3.1.0 released on 14 Sept 2016)
- Remove unnecessary patches
  - prewikka-cheetah-shbang.patch
  - prewikka-wsgi-shbang.patch
- Spec-Cleaner

- Trim filler words from description.
- Replace -exec rm by simpler -delete.

Fix Group to be a valid OpenSuse Group
  Fix Requires
  Fix source URL
  Fix dependencies
  Clean usage of "-n %{name}-"

Initial import
  Add patchs :
  * prewikka-cheetah-shbang.patch
  * Fix shebang in cheetah generated files
  * prewikka-ez_setup.patch
  * Support old setuptools
  * prewikka-wsgi-shbang.patch
  * Fix shebang in wsgi file