Propagate 'store' where applicable, improve docs

Models/ThemeConfig/Json/RewritableConfigJson.ts

@@ -1,9 +1,14 @@
 /**
  * Rewrites and multiplies the given renderings of type T.
  * 
+ * This can be used for introducing many similar questions automatically,
+ * which also makes translations easier.
+ * 
+ * (Note that the key does _not_ need to be wrapped in {}. 
+ * However, we recommend to use them if the key is used in a translation, as missing keys will be picked up and warned for by the translation scripts)
+ * 
  * For example:
  *
- *
  * ```
  * {
  *     rewrite: {
@@ -13,9 +18,9 @@
  *             ["Y", 1],
  *             ["Z", 2]
  *         ],
- *         renderings: {
+ *         renderings: [{
  *             "key":"a|b|c"
- *         }
+ *         }]
  *     }
  * }
  * ```