Added a Copy to clipboard button for go links.

- Closes issue#61
- Also made Go link page more accessible for screen-readers

go/go/templates/link_box.html

@@ -22,7 +22,17 @@
 <div class="container">
   <div class="col-md-8">
     <h3>Go Address:</h3>
-      <a href="{{url.short}}">{{domain}}{{url.short}}</a>
+      <a id="link" href="{{url.short}}">{{domain}}{{url.short}}</a>
+      <br></br>
+      <button type="button" class="button btn btn-default btn-xs fa" role="button"
+          id="btn" data-clipboard-target="#link">
+          <i class="fa fa-clipboard" aria-hidden="true"></i> Copy to clipboard</button>
+      <script src="../../static/js/clipboard.min.js"></script>
+      <script>
+      var btn = document.getElementById('btn');
+      var clipboard = new Clipboard(btn);
+      </script>
+
     <br></br>
 
     <h3>Address Details:</h3>
@@ -44,7 +54,7 @@
       <strong>Expires:</strong> {{url.expires|default_if_none:"Never"}}
       <br></br>
       <a class="button btn btn-danger btn-sm fa" href="{{domain}}delete/{{url.short}}">
-        <i class="fa fa-trash-o fa-lg"></i> Delete</a>
+        <i class="fa fa-trash-o fa-lg" aria-hidden="true"></i> Delete</a>
 
       <a tabindex="0" class="button btn btn-info btn-sm fa"
         role="button" data-toggle="popover" title="Not Implemented Quite Yet :("
@@ -52,7 +62,7 @@
         "We are working on adding this feature in a future
         release of Go. If you'd like to check that progress or potentially
         contribute code, head to git.gmu.edu/srct/go">
-        <i class="fa fa-cog"></i> Edit</a>
+        <i class="fa fa-cog" aria-hidden="true"></i> Edit</a>
 
       {% endif %}
       <br></br>

go/static/js/clipboard.min.js

+/*!
+ * clipboard.js v1.5.12
+ * https://zenorocha.github.io/clipboard.js
+ *
+ * Licensed MIT © Zeno Rocha
+ */
+!function(t){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var e;e="undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this,e.Clipboard=t()}}(function(){var t,e,n;return function t(e,n,o){function i(a,c){if(!n[a]){if(!e[a]){var s="function"==typeof require&&require;if(!c&&s)return s(a,!0);if(r)return r(a,!0);var l=new Error("Cannot find module '"+a+"'");throw l.code="MODULE_NOT_FOUND",l}var u=n[a]={exports:{}};e[a][0].call(u.exports,function(t){var n=e[a][1][t];return i(n?n:t)},u,u.exports,t,e,n,o)}return n[a].exports}for(var r="function"==typeof require&&require,a=0;a<o.length;a++)i(o[a]);return i}({1:[function(t,e,n){var o=t("matches-selector");e.exports=function(t,e,n){for(var i=n?t:t.parentNode;i&&i!==document;){if(o(i,e))return i;i=i.parentNode}}},{"matches-selector":5}],2:[function(t,e,n){function o(t,e,n,o,r){var 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You can\'t cut text from elements with "readonly" or "disabled" attributes');this._target=e}},get:function t(){return this._target}}]),t}();t.exports=c})},{select:6}],9:[function(e,n,o){!function(i,r){if("function"==typeof t&&t.amd)t(["module","./clipboard-action","tiny-emitter","good-listener"],r);else if("undefined"!=typeof o)r(n,e("./clipboard-action"),e("tiny-emitter"),e("good-listener"));else{var a={exports:{}};r(a,i.clipboardAction,i.tinyEmitter,i.goodListener),i.clipboard=a.exports}}(this,function(t,e,n,o){"use strict";function i(t){return t&&t.__esModule?t:{"default":t}}function r(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}function a(t,e){if(!t)throw new ReferenceError("this hasn't been initialised - super() hasn't been called");return!e||"object"!=typeof e&&"function"!=typeof e?t:e}function c(t,e){if("function"!=typeof e&&null!==e)throw new TypeError("Super expression must either be null or a function, not "+typeof e);t.prototype=Object.create(e&&e.prototype,{constructor:{value:t,enumerable:!1,writable:!0,configurable:!0}}),e&&(Object.setPrototypeOf?Object.setPrototypeOf(t,e):t.__proto__=e)}function s(t,e){var n="data-clipboard-"+t;if(e.hasAttribute(n))return e.getAttribute(n)}var l=i(e),u=i(n),f=i(o),d=function(t){function e(n,o){r(this,e);var i=a(this,t.call(this));return i.resolveOptions(o),i.listenClick(n),i}return c(e,t),e.prototype.resolveOptions=function t(){var e=arguments.length<=0||void 0===arguments[0]?{}:arguments[0];this.action="function"==typeof e.action?e.action:this.defaultAction,this.target="function"==typeof e.target?e.target:this.defaultTarget,this.text="function"==typeof e.text?e.text:this.defaultText},e.prototype.listenClick=function t(e){var n=this;this.listener=(0,f.default)(e,"click",function(t){return n.onClick(t)})},e.prototype.onClick=function t(e){var n=e.delegateTarget||e.currentTarget;this.clipboardAction&&(this.clipboardAction=null),this.clipboardAction=new l.default({action:this.action(n),target:this.target(n),text:this.text(n),trigger:n,emitter:this})},e.prototype.defaultAction=function t(e){return s("action",e)},e.prototype.defaultTarget=function t(e){var n=s("target",e);return n?document.querySelector(n):void 0},e.prototype.defaultText=function t(e){return s("text",e)},e.prototype.destroy=function t(){this.listener.destroy(),this.clipboardAction&&(this.clipboardAction.destroy(),this.clipboardAction=null)},e}(u.default);t.exports=d})},{"./clipboard-action":8,"good-listener":4,"tiny-emitter":7}]},{},[9])(9)});
\ No newline at end of file