Drop super-favicon, incompatible with newer Django

Pipfile

@@ -39,7 +39,6 @@ django-cors-headers = "*"
 python-baseconv = "*"
 django-computed-property = "*"
 docutils = "*"
-django-super-favicon = "*"
 django-redis = "*"
 gevent = "*"
 django-extensions = "*"
@@ -49,6 +48,7 @@ jinja2 = "*"
 msgpack = "*"
 django-randomslugfield = "*"
 ago = "*"
+favicons = "*"
 
 [dev-packages]
 ptpython = "*"

lemoncurry/settings/base.py

@@ -31,7 +31,7 @@ SECRET_KEY = '6riil57g@r^wprf7mdy((+bs&(6l*phcn9&fd$l0@t-kzj+xww'
 # SECURITY WARNING: don't run with debug turned on in production!
 DEBUG = True
 
-ALLOWED_HOSTS = []  # type: List[str]
+ALLOWED_HOSTS: List[str] = []
 INTERNAL_IPS = ['127.0.0.1', '::1']
 
 # Settings to tighten up security - these can safely be on in dev mode too,
@@ -90,7 +90,6 @@ INSTALLED_APPS = [
     'django_otp.plugins.otp_static',
     'django_otp.plugins.otp_totp',
     'django_rq',
-    'favicon',
     'meta',
 
     'entries',
@@ -232,7 +231,9 @@ STATICFILES_FINDERS = (
     'django.contrib.staticfiles.finders.AppDirectoriesFinder',
     'compressor.finders.CompressorFinder',
 )
-STATICFILES_STORAGE = 'django.contrib.staticfiles.storage.ManifestStaticFilesStorage'
+STATICFILES_STORAGE = (
+    'django.contrib.staticfiles.storage.ManifestStaticFilesStorage'
+)
 
 COMPRESS_PRECOMPILERS = (
     ('text/stylus', 'npx stylus -u ./lemoncurry/static/lemoncurry/css/theme'),
@@ -273,6 +274,3 @@ PUSH_HUB = 'https://00dani.superfeedr.com/'
 # django-rq
 # https://github.com/ui/django-rq
 RQ_QUEUES = {'default': {'USE_REDIS_CACHE': 'default'}}
-
-# django-super-favicon
-FAVICON_STORAGE = 'django.core.files.storage.DefaultStorage'