Added new widgets and text styles and fonts to the system; Moved the logo into the project proper so nothing should be in the root Public folder any more (other than generated content).

lib/modules/theme/index.js

@@ -0,0 +1,5 @@
+// This configures the apostrophe-assets module to push a 'site.less'
+// stylesheet by default, and to use jQuery 3.x
+
+module.exports = {
+};