Import panel:

- added pskl.controller.settings.ImportController (empty atm)
- moved SettingsController under settings namespace
- move settings templates in a dedicated folder
- created import icon (svg is in the resources folder)
- added import button in right-layer

js/controller/settings/ImportController.js

@@ -0,0 +1,8 @@
+(function () {
+  var ns = $.namespace('pskl.controller.settings');
+
+  ns.ImportController = function () {};
+
+  ns.ImportController.prototype.init = function () {};
+
+})();