Feature/custom locations (#74)

* New feature: custom locations

* Custom locations: exteding config generator

* Custom locations: refactoring

* Fixing proxy_host table on small screens

* Custom locations: translations

* Custom locations bugfix

* Custom locations bugfix

* PR #74 fixes

src/frontend/js/app/nginx/proxy/location.js

@@ -0,0 +1,54 @@
+const locationItemTemplate   = require('./location-item.ejs');
+const Mn                     = require('backbone.marionette');
+const App                    = require('../../main');
+
+const LocationView = Mn.View.extend({
+    template: locationItemTemplate,
+    className: 'location_block',
+
+    ui: {
+        toggle:     'input[type="checkbox"]',
+        config:     '.config',
+        delete:     '.location-delete'
+    },
+
+    events: {
+        'change @ui.toggle': function(el) {
+            if (el.target.checked) {
+                this.ui.config.show();
+            } else {
+                this.ui.config.hide();
+            }
+        },
+
+        'change .model': function (e) {
+            const map = {};
+            map[e.target.name] = e.target.value;
+            this.model.set(map);
+        },
+
+        'click @ui.delete': function () {
+            this.model.destroy();
+        }
+    },
+
+    onRender: function() {
+        $(this.ui.config).hide();
+    },
+
+    templateContext: function() {
+        return {
+            i18n: App.i18n
+        }
+    }
+});
+
+const LocationCollectionView = Mn.CollectionView.extend({
+    className: 'locations_container',
+    childView: LocationView
+});
+
+module.exports = {
+    LocationCollectionView,
+    LocationView
+}