Cleanup comments/docs/descriptions. [ci skip]

Former-commit-id: 4d6a0a54abbaa6607cc5897a09e5a7c0fc884a1a

lodash.js

@@ -326,7 +326,8 @@
     // with a single line comment
     return window.eval('(function(' + args + ') {' + body + '\n})');
   }
-  // use script injection if Firefox's script engine is detected
+  // use `eval` to avoid Firefox's unoptimized `Function` constructor
+  // http://bugzil.la/804933
   if (isIeOpera || isV8 || !isFirefox) {
     createFunction = Function;
   }
@@ -946,7 +947,7 @@
    * also be cloned, otherwise they will be assigned by reference. Functions and
    * DOM nodes are **not** cloned. The enumerable properties of `arguments` objects
    * and objects created by constructors other than `Object` are cloned to plain
-   * Object objects.
+   * `Object` objects.
    *
    * Note: Lo-Dash's deep clone functionality is loosely based on the structured clone algorithm.
    * See http://www.w3.org/TR/html5/common-dom-interfaces.html#internal-structured-cloning-algorithm.