Fixed: Scrolling of modals with tabular content in iOS

Fixes #3264

frontend/src/Components/Scroller/Scroller.css

@@ -2,6 +2,7 @@
   @add-mixin scrollbar;
   @add-mixin scrollbarTrack;
   @add-mixin scrollbarThumb;
+  -webkit-overflow-scrolling: touch;
 }
 
 .none {
@@ -26,3 +27,11 @@
     overflow-x: auto;
   }
 }
+
+.both {
+  overflow: scroll;
+
+  &.autoScroll {
+    overflow: auto;
+  }
+}

frontend/src/Components/Scroller/Scroller.js

@@ -66,7 +66,7 @@ class Scroller extends Component {
 
 Scroller.propTypes = {
   className: PropTypes.string,
-  scrollDirection: PropTypes.oneOf([scrollDirections.NONE, scrollDirections.HORIZONTAL, scrollDirections.VERTICAL]).isRequired,
+  scrollDirection: PropTypes.oneOf(scrollDirections.all).isRequired,
   autoScroll: PropTypes.bool.isRequired,
   scrollTop: PropTypes.number,
   children: PropTypes.node,