Rename class "mini" to "small"

more semantic, more clean :)

src/Lungo.Constants.js

@@ -29,7 +29,7 @@ LUNGO.Constants = {
         RIGHT: 'onright',
         LEFT: 'onleft',
         HORIZONTAL: 'horizontal',
-        MINI: 'mini'
+        SMALL: 'small'
     },
 
     TRIGGER: {