updates requirements to Django 2.2 to fix sqlite issue

requirements.txt

 autopep8==1.4.3
 certifi==2018.11.29
 chardet==3.0.4
-Django==2.1.4
+Django==2.2.1
 django-auth-ldap==1.7.0
 django-chartjs==1.3
 django-crispy-forms==1.7.2
@@ -19,4 +19,5 @@ python-ldap==3.1.0
 pytz==2018.7
 requests==2.21.0
 six==1.12.0
+sqlparse==0.3.0
 urllib3==1.24.1