Add copyright notices to third-party files

These will get slurped into the minified files we generate.

(imported from commit 46375d6d8c382bf681c192d2e6a0cb6d941bdac0)

zephyr/static/third/jquery-idle/jquery.idle.js

@@ -2,6 +2,31 @@
  *  Modified by Humbug, Inc.
  */
 
+/** @preserve
+ Software from "jQuery Idle", a jQuery plugin that executes a callback function
+ if the user is idle, is Copyright (c) 2011-2013 Henrique Boaventura and is
+ provided under the following license (the jQuery Idle software has been modified):
+ --
+ Permission is hereby granted, free of charge, to any person obtaining a copy
+ of this software and associated documentation files (the "Software"), to deal
+ in the Software without restriction, including without limitation the rights
+ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ copies of the Software, and to permit persons to whom the Software is
+ furnished to do so, subject to the following conditions:
+
+ The above copyright notice and this permission notice shall be included in
+ all copies or substantial portions of the Software.
+
+ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ THE SOFTWARE.
+ --
+*/
+
 /**
  *  File: jquery.idle.js
  *  Title:  JQuery Idle.