Added test to count queries on dynamic form queryset + improve performances

[brunobord]

refs #155.

• reviewable
• to be autosquashed,

[brunobord]

at the time of writing, here's the diff between this branch and the #156

$ git diff 155-deduplicate_dynamic_form_queryset_rebased deduplicate_dynamic_form_queryset

diff --git a/CHANGELOG.rst b/CHANGELOG.rst
index eb118ca..0b91285 100644
--- a/CHANGELOG.rst
+++ b/CHANGELOG.rst
@@ -6,7 +6,6 @@ master (unreleased)
 ===================
 
 * Added a make target to install the demo site.
-* Added django-perf-rec module for tests and improved SQL queries in `ContextFormDetailView` (#54, #154, #160).
 
 
 Release 0.5.0 (2017-01-10)
diff --git a/demo/demo/settings.py b/demo/demo/settings.py
index 4e0b88d..c85f655 100644
--- a/demo/demo/settings.py
+++ b/demo/demo/settings.py
@@ -128,9 +128,3 @@ FORMIDABLE_POST_CREATE_CALLBACK_SUCCESS = 'demo.callback_success_message'
 FORMIDABLE_POST_UPDATE_CALLBACK_SUCCESS = 'demo.callback_success_message'
 FORMIDABLE_POST_CREATE_CALLBACK_FAIL = 'demo.callback_fail_message'
 FORMIDABLE_POST_UPDATE_CALLBACK_FAIL = 'demo.callback_fail_message'
-
-
-# django-perf-rec settings
-PERF_REC = {
-    'MODE': 'all'
-}
diff --git a/formidable/__init__.py b/formidable/__init__.py
index 96b0a07..d21ec65 100644
--- a/formidable/__init__.py
+++ b/formidable/__init__.py
@@ -1,3 +1 @@
 default_app_config = 'formidable.app.FormidableConfig'
-
-version = '0.6.0.dev0'
diff --git a/setup.py b/setup.py
index 398eb69..d5526df 100644
--- a/setup.py
+++ b/setup.py
@@ -4,15 +4,12 @@ from __future__ import unicode_literals
 import os
 from setuptools import setup, find_packages
 
-import formidable
-
-
 with open(os.path.join(os.path.dirname(__file__), 'README.rst')) as readme:
     README = readme.read()
 
 setup(
     name='django-formidable',
-    version=formidable.version,
+    version='0.6.0.dev0',
     packages=find_packages(),
     include_package_data=True,
     license='BSD License',

which corresponds to the diff introduced by the previous merges of #159 and #160.
It means these branch are finally equivalent, even though I've introduced fixups that mark the evolution of the .yml files generated by django-perf-rec.

[wo0dyn]

LGTM. Thanks.