Hide scrollbars in Edge instead of showing white ones

Scrollbars in the app aren't really useful since lists are infinite anyway. 
If you don't have touch or mouse wheel, you can use the keyboard accessiblity to scroll (click in the scrollable list, then use up/down or page up/down).

app/assets/stylesheets/application.scss

@@ -96,6 +96,13 @@ table {
   background: transparent;
 }
 
+* {
+  -ms-overflow-style: none;
+}
+#if-supports::webkit-scrollbar, * {
+  -ms-overflow-style: unset;
+}
+
 body {
   font-family: 'Roboto', sans-serif;
   background: $color1 image-url('background-photo.jpeg');