Added the ability to define button, progress bar, tooltip and popover radius. (#448)

* Added the ability to define button, progress bar, tooltip and popover radius.

* Border updates

* Fix notification scaling

scss/main.scss

@@ -30,6 +30,9 @@
 @import 'style/bar/power';
 @import 'style/bar/battery';
 
+//notifications
+@import 'style/notifications/popups';
+
 //modules - menus
 @import 'style/menus/menu';
 @import 'style/menus/power';
@@ -43,9 +46,6 @@
 @import 'style/menus/energy';
 @import 'style/menus/dashboard';
 
-//notifications
-@import 'style/notifications/popups';
-
 //osd
 @import 'style/osd/index';