setup.py: remove "scripts", use "entry_points"

"scripts" folder contain files that can be easily generated by
setuptools since they are merely wrappers to weboob.applications.*.

The whole "scripts" is removed.
It will require weboob developers not to simply point their PATH
to the scripts dir.
Status Job ID Name Coverage
  Build
created #17617
build:2.7
created #17618
build:3
 
  Test
created #17620
allowed to fail
lint:2.7
created #17624
allowed to fail
lint:3
created #17619
pyflakes:2.7
created #17623
pyflakes:3
created #17621
unittests:2.7
created #17625
unittests:3
created #17622
allowed to fail
unittests-modules:2.7
created #17626
allowed to fail
unittests-modules:3
 
  Deploy
created #17627
doc:2.7
created #17628
doc:3