revert requirements.txt change as py27 error was setuptools bug fixed in 38.2.1

requirements.txt

@@ -2,7 +2,7 @@ django~=1.11.1
 djangorestframework~=3.6.3
 beautifulsoup4~=4.6.0
 bleach~=2.0.0
-django-debug-toolbar<1.9
+django-debug-toolbar~=1.8
 django-crispy-forms~=1.6.1
 django-htmlmin~=0.10.0
 django-mptt~=0.8.7
@@ -14,4 +14,4 @@ pillow~=4.1.1
 psycopg2~=2.7.1
 pytz
 requests<3
-unidecode~=0.4.20
+unidecode~=0.4.20