Add web site settings

backend/sql/version_1.sql

@@ -159,3 +159,11 @@ CREATE TABLE [Ingredient] (
 ) STRICT;
 
 CREATE INDEX [Ingredient_order_index] ON [Ingredient]([order]);
+
+-- Table not strict because [value] can story any type of data.
+CREATE TABLE [Settings] (
+    [name] TEXT NOT NULL PRIMARY KEY,
+    [value] TEXT NOT NULL
+);
+
+INSERT INTO [Settings] ([name], [value]) VALUES ('new_user_registration_enabled', TRUE);