Moved some modules and added documentation

wv-settings.rkt

@@ -0,0 +1,41 @@
+#lang racket/base
+
+(require racket/class
+         simple-ini/class
+         )
+
+(provide wv-settings%)
+
+(define wv-settings%
+  (class object%
+    (init-field ini
+                wv-context
+                )
+
+    (define/public (get key . default-value)
+      (if (null? default-value)
+          (send ini get wv-context key)
+          (send ini get wv-context key (car default-value))))
+    
+    (define/public (set! key value)
+      (send ini set! wv-context key value))
+
+    (define/public (get/global key . default-value)
+      (if (null? default-value)
+          (send ini get 'global key)
+          (send ini get 'global key (car default-value))))
+
+    (define/public (set/global! key value)
+      (send ini set! 'global key value))
+    
+    (define/public (clone context)
+      (new wv-settings% [ini ini] [wv-context context]))
+
+    (define/public (context)
+      wv-context)
+
+    (super-new)
+    )
+  )
+
+