New Added client-side Sentry logging

Using Raven.js allows logging client-side javascript errors to the
configured Sentry server.

htdocs/includes/raven-js/plugins/jquery.js

@@ -0,0 +1,75 @@
+/**
+ * jQuery plugin
+ *
+ * Patches event handler callbacks and ajax callbacks.
+ */
+;(function(window, Raven, $) {
+'use strict';
+
+// quit if jQuery isn't on the page
+if (!$) {
+    return;
+}
+
+var _oldEventAdd = $.event.add;
+$.event.add = function ravenEventAdd(elem, types, handler, data, selector) {
+    var _handler;
+
+    if (handler && handler.handler) {
+        _handler = handler.handler;
+        handler.handler = Raven.wrap(handler.handler);
+    } else {
+        _handler = handler;
+        handler = Raven.wrap(handler);
+    }
+
+    // If the handler we are attaching doesn’t have the same guid as
+    // the original, it will never be removed when someone tries to
+    // unbind the original function later. Technically as a result of
+    // this our guids are no longer globally unique, but whatever, that
+    // never hurt anybody RIGHT?!
+    if (_handler.guid) {
+        handler.guid = _handler.guid;
+    } else {
+        handler.guid = _handler.guid = $.guid++;
+    }
+
+    return _oldEventAdd.call(this, elem, types, handler, data, selector);
+};
+
+var _oldReady = $.fn.ready;
+$.fn.ready = function ravenjQueryReadyWrapper(fn) {
+    return _oldReady.call(this, Raven.wrap(fn));
+};
+
+var _oldAjax = $.ajax;
+$.ajax = function ravenAjaxWrapper(url, options) {
+    var keys = ['complete', 'error', 'success'], key;
+
+    // Taken from https://github.com/jquery/jquery/blob/eee2eaf1d7a189d99106423a4206c224ebd5b848/src/ajax.js#L311-L318
+    // If url is an object, simulate pre-1.5 signature
+    if (typeof url === 'object') {
+        options = url;
+        url = undefined;
+    }
+
+    // Force options to be an object
+    options = options || {};
+
+    /*jshint -W084*/
+    while(key = keys.pop()) {
+        if ($.isFunction(options[key])) {
+            options[key] = Raven.wrap(options[key]);
+        }
+    }
+    /*jshint +W084*/
+
+    try {
+        return _oldAjax.call(this, url, options);
+    } catch (e) {
+        Raven.captureException(e);
+        throw e;
+    }
+};
+
+}(window, window.Raven, window.jQuery));