Refactor tox (#4)

Author: AurelienJaquier

tox.ini

@@ -33,11 +33,11 @@ coverage_options = --cov-append --cov-report=xml --cov-config=.coveragerc
 commands =
     make clean
 
-    functional: make stochkv_prepare l5pc_prepare sc_prepare meta_prepare
     style: pycodestyle --ignore=E402,W503,W504 bluepyopt
     syntax: flake8 . --count --select=E9,F63,F72,F82 --show-source --statistics
 
     unit: pytest --cov=bluepyopt {[testenv]coverage_options} bluepyopt/tests -k unit
+    functional: make stochkv_prepare l5pc_prepare sc_prepare meta_prepare
     functional: pytest --cov=bluepyopt {[testenv]coverage_options} bluepyopt/tests -k 'not unit'
 
 [testenv:docs]