Merge pull request pkp#1515 from NateWr/i2085_ios_frontend_dropdowns

pkp/pkp-lib#2085 Use Bootstrap dropdowns for default theme dropdowns

plugins/themes/default/DefaultThemePlugin.inc.php

@@ -149,6 +149,11 @@ public function init() {
 		$this->addScript('jQueryUI', $jqueryUI, array('baseUrl' => ''));
 		$this->addScript('jQueryTagIt', $request->getBaseUrl() . '/lib/pkp/js/lib/jquery/plugins/jquery.tag-it.js', array('baseUrl' => ''));
 
+		// Load Bootsrap's dropdown
+		$this->addScript('popper', 'js/lib/popper/popper.js');
+		$this->addScript('bsUtil', 'js/lib/bootstrap/util.js');
+		$this->addScript('bsDropdown', 'js/lib/bootstrap/dropdown.js');
+
 		// Load custom JavaScript for this theme
 		$this->addScript('default', 'js/main.js');
 	}

plugins/themes/default/js/lib/bootstrap/LICENSE.md

@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2011-2017 Twitter, Inc.
+Copyright (c) 2011-2017 The Bootstrap Authors
+
+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.