[CORE][COMPOSER] Move extlib packages with immediate composer correspondent to composer dependencies

This adds a composer.json for all dependencies that are available

public/plugins/SubMirror/js/mirrorsettings.js

@@ -0,0 +1,47 @@
+$(function() {
+    /**
+     * Append 'ajax=1' parameter onto URL.
+     */
+    function ajaxize(url) {
+        if (url.indexOf('?') == '-1') {
+            return url + '?ajax=1';
+        } else {
+            return url + '&ajax=1';
+        }
+    }
+
+    var addMirror = $('#add-mirror');
+    var wizard = $('#add-mirror-wizard');
+    if (wizard.length > 0) {
+        var list = wizard.find('.provider-list');
+        var providers = list.find('.provider-heading');
+        providers.click(function(event) {
+            console.log(this);
+            var targetUrl = $(this).find('a').attr('href');
+            if (targetUrl) {
+                // Make sure we don't accidentally follow the direct link
+                event.preventDefault();
+
+                var node = this;
+                function showNew() {
+                    var detail = $('<div class="provider-detail" style="display: none"></div>').insertAfter(node);
+                    detail.load(ajaxize(targetUrl), function(responseText, testStatus, xhr) {
+                        detail.slideDown('fast', function() {
+                            detail.find('input[type="text"]').focus();
+                        });
+                    });
+                }
+
+                var old = addMirror.find('.provider-detail');
+                if (old.length) {
+                    old.slideUp('fast', function() {
+                        old.remove();
+                        showNew();
+                    });
+                } else {
+                    showNew();
+                }
+            }
+        });
+    }
+});