Add back support for individual database settings

Added for compatibility with version 3.2 settings.

These are now a fallback if the new 'DATABASES'
setting is not specified.

Signed-off-by: Roberto Rosario <roberto.rosario@mayan-edms.com>

mayan/apps/smart_settings/literals.py

@@ -9,6 +9,13 @@ BOOTSTRAP_SETTING_LIST = (
     {'name': 'COMMON_EXTRA_APPS'},
     {'name': 'DATA_UPLOAD_MAX_MEMORY_SIZE'},
     {'name': 'DATABASES'},
+    {'name': 'DATABASE_ENGINE'},
+    {'name': 'DATABASE_NAME'},
+    {'name': 'DATABASE_USER'},
+    {'name': 'DATABASE_PASSWORD'},
+    {'name': 'DATABASE_HOST'},
+    {'name': 'DATABASE_PORT'},
+    {'name': 'DATABASE_CONN_MAX_AGE'},
     {'name': 'DEBUG', 'default': 'false'},
     {'name': 'DEFAULT_FROM_EMAIL'},
     {'name': 'DISALLOWED_USER_AGENTS'},