more documentation, moved toString to shell.js

js/actions/system_collections.js

@@ -0,0 +1,23 @@
+defineAction("system/collections.json",
+  function (req, res) {
+    var colls;
+    var coll;
+    var result;
+
+    colls = db._collections();
+    result = {
+      path : db._path,
+      collections : {}
+    };
+
+    for (var i = 0;  i < colls.length;  ++i) {
+      coll = colls[i];
+
+      result.collections[coll._name] = { name : coll._name, status : coll.status() };
+    }
+
+    res.responseCode = 200;
+    res.contentType = "application/json";
+    res.body = toJson(result);
+  }
+);