Full styleguide now available via yarn styleguide

Due to a number of hacks, the style guide can be used to show Backbone
views. This will allow a smooth path from the old way of doing things to
the new.

test/legacy_bridge.js

@@ -0,0 +1,42 @@
+
+// Because we aren't hosting the styleguide in Electron, we can't rely on preload.js
+//   to set things up for us. This gives us the minimum bar shims for everything it
+//   provdes.
+//
+// Remember, the idea here is just to enable visual testing, no full functionality. Most
+//   of thise can be very simple.
+
+window.PROTO_ROOT = '/protos';
+window.nodeSetImmediate = () => {};
+
+window.Signal = {};
+window.Signal.Backup = {};
+window.Signal.Crypto = {};
+window.Signal.Logs = {};
+window.Signal.Migrations = {};
+
+window.Signal.React = window.Signal.React = {};
+
+window.EmojiConvertor = function EmojiConvertor() {};
+window.EmojiConvertor.prototype.init_colons = () => {}
+window.EmojiConvertor.prototype.signalReplace = html => html;
+window.EmojiConvertor.prototype.replace_unified = string => string;
+window.EmojiConvertor.prototype.img_sets = {
+  apple: {}
+};
+
+window.i18n = () => '';
+
+window.Signal.Migrations.V17 = {};
+window.Signal.OS = {};
+window.Signal.Types = {};
+window.Signal.Types.Attachment = {};
+window.Signal.Types.Errors = {};
+window.Signal.Types.Message = {
+  initializeSchemaVersion: attributes => attributes,
+};
+window.Signal.Types.MIME = {};
+window.Signal.Types.Settings = {};
+window.Signal.Views = {};
+window.Signal.Views.Initialization = {};
+window.Signal.Workflow = {};