[WIP] Notifications (#599)

Adds a new notifications feature to the Admin plugin. It will now lookup notifications which are set up on getgrav.org and will inform users, and also alert for new updates and provide awareness on various topics.

Also fixes issue with Array field in `value_only` mode, improperly displaying the key when novalue was set, and fixes issue with drag handlers in Array not showing/hiding properly (#950)

Updated FontAwesome to 4.6.3

vendor/zendframework/zendxml/tests/ZendXmlTest/SecurityTest.php

@@ -0,0 +1,135 @@
+<?php
+/**
+ * Zend Framework (http://framework.zend.com/)
+ *
+ * @link      http://github.com/zendframework/zf2 for the canonical source repository
+ * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   http://framework.zend.com/license/new-bsd New BSD License
+ */
+namespace ZendTest\Xml;
+
+use ZendXml\Security as XmlSecurity;
+use ZendXml\Exception;
+use DOMDocument;
+use SimpleXMLElement;
+
+class SecurityTest extends \PHPUnit_Framework_TestCase
+{
+    /**
+     * @expectedException ZendXml\Exception\RuntimeException
+     */
+    public function testScanForXEE()
+    {
+        $xml = <<<XML
+<?xml version="1.0"?>
+<!DOCTYPE results [<!ENTITY harmless "completely harmless">]>
+<results>
+    <result>This result is &harmless;</result>
+</results>
+XML;
+
+        $this->setExpectedException('ZendXml\Exception\RuntimeException');
+        $result = XmlSecurity::scan($xml);
+    }
+
+    public function testScanForXXE()
+    {
+        $file = tempnam(sys_get_temp_dir(), 'ZendXml_Security');
+        file_put_contents($file, 'This is a remote content!');
+        $xml = <<<XML
+<?xml version="1.0"?>
+<!DOCTYPE root
+[
+<!ENTITY foo SYSTEM "file://$file">
+]>
+<results>
+    <result>&foo;</result>
+</results>
+XML;
+
+        try {
+            $result = XmlSecurity::scan($xml);
+        } catch (Exception\RuntimeException $e) {
+            unlink($file);
+            return;
+        }
+        $this->fail('An expected exception has not been raised.');
+    }
+
+    public function testScanSimpleXmlResult()
+    {
+        $result = XmlSecurity::scan($this->getXml());
+        $this->assertTrue($result instanceof SimpleXMLElement);
+        $this->assertEquals($result->result, 'test');
+    }
+
+    public function testScanDom()
+    {
+        $dom = new DOMDocument('1.0');
+        $result = XmlSecurity::scan($this->getXml(), $dom);
+        $this->assertTrue($result instanceof DOMDocument);
+        $node = $result->getElementsByTagName('result')->item(0);
+        $this->assertEquals($node->nodeValue, 'test');
+    }
+
+    public function testScanInvalidXml()
+    {
+        $xml = <<<XML
+<foo>test</bar>
+XML;
+
+        $result = XmlSecurity::scan($xml);
+        $this->assertFalse($result);
+    }
+
+    public function testScanInvalidXmlDom()
+    {
+        $xml = <<<XML
+<foo>test</bar>
+XML;
+
+        $dom = new DOMDocument('1.0');
+        $result = XmlSecurity::scan($xml, $dom);
+        $this->assertFalse($result);
+    }
+
+    public function testScanFile()
+    {
+        $file = tempnam(sys_get_temp_dir(), 'ZendXml_Security');
+        file_put_contents($file, $this->getXml());
+
+        $result = XmlSecurity::scanFile($file);
+        $this->assertTrue($result instanceof SimpleXMLElement);
+        $this->assertEquals($result->result, 'test');
+        unlink($file);
+    }
+
+    public function testScanXmlWithDTD()
+    {
+        $xml = <<<XML
+<?xml version="1.0"?>
+<!DOCTYPE results [
+<!ELEMENT results (result+)>
+<!ELEMENT result (#PCDATA)>
+]>
+<results>
+    <result>test</result>
+</results>
+XML;
+
+        $dom = new DOMDocument('1.0');
+        $result = XmlSecurity::scan($xml, $dom);
+        $this->assertTrue($result instanceof DOMDocument);
+        $this->assertTrue($result->validate());
+    }
+
+    protected function getXml()
+    {
+        return <<<XML
+<?xml version="1.0"?>
+<results>
+    <result>test</result>
+</results>
+XML;
+    }
+}