python[3]-flask-xstatic: new recipes

V2: add missing FILESEXTRAPATHS_prepend

Signed-off-by: Bill Randle <bill.randle@gmail.com>
Signed-off-by: Armin Kuster <akuster808@gmail.com>

meta-python/recipes-devtools/python/python-flask-xstatic/remove-pip-requires.patch

@@ -0,0 +1,7 @@
+--- Flask-XStatic-0.0.1/setup.py.orig	2015-01-30 08:01:56.000000000 -0800
++++ Flask-XStatic-0.0.1/setup.py	2017-04-17 21:40:32.570181626 -0700
+@@ -1,4 +1,3 @@
+-from pip.req import parse_requirements
+ import setuptools
+ 
+ with open('README.rst') as f: