Easy config: add support for setting redis URI.

etebase-server.ini.example

@@ -8,6 +8,7 @@ debug = false
 ;media_url = /user-media/
 ;language_code = en-us
 ;time_zone = UTC
+;redis_uri = redis://localhost:6379
 
 [allowed_hosts]
 allowed_host1 = example.com

etebase_server/settings.py

@@ -154,6 +154,9 @@ if any(os.path.isfile(x) for x in config_locations):
     TIME_ZONE = section.get("time_zone", TIME_ZONE)
     DEBUG = section.getboolean("debug", DEBUG)
 
+    if "redis_uri" in section:
+        ETEBASE_REDIS_URI = section.get("redis_uri")
+
     if "allowed_hosts" in config:
         ALLOWED_HOSTS = [y for x, y in config.items("allowed_hosts")]