Merge pull request #1770 from OpenTechFund/updates/django_2_2_10_wagtail_2_7_1

Update Django to 2.2.10 and Wagtail to 2.7.1.

requirements.txt

@@ -27,7 +27,7 @@ django-webpack-loader==0.6.0
 django_select2==7.1.1
 djangorestframework==3.9.2
 djangorestframework-api-key==1.3.0
-django==2.2.9
+django==2.2.10
 gunicorn==19.9.0
 mailchimp3==3.0.9
 mistune==0.8.4
@@ -37,6 +37,6 @@ psycopg2==2.7.3.1
 reportlab==3.5.31
 social_auth_app_django==3.1.0
 tomd==0.1.3
-wagtail==2.7.0
+wagtail==2.7.1
 wagtail-cache==0.5.2
 whitenoise==4.1.4