Fleet-up cleanup (#798)

Add caching and better error handling
Move fleetup templates into fleetup app
Move fleetup urls into fleetup app
Fix button overflow and url
Add manager unit tests
Fix python3 compatibility

alliance_auth/settings.py.example

@@ -57,6 +57,7 @@ INSTALLED_APPS = [
     'optimer',
     'corputils',
     'fleetactivitytracking',
+    'fleetup',
     'notifications',
     'esi',
     'permissions_tool',
@@ -661,6 +662,10 @@ LOGGING = {
             'handlers': ['log_file', 'console', 'notifications'],
             'level': 'ERROR',
         },
+        'fleetup': {
+            'handlers': ['log_file', 'console', 'notifications'],
+            'level': 'DEBUG',
+        },
         'util': {
             'handlers': ['log_file', 'console', 'notifications'],
             'level': 'DEBUG',