Convert almost all IActivate instances that open UIs to ActivatableUI (#7028)

* Chem master

* Drone support for handhelds

* Vending machines, scanners

* Cloners, R&D computers

* make research a little less sussy

* Unfuck wires

* PA control computer

* Unfuck merge

* Clean up git gore for good

* Disposals

* Microwaves

* paper

* Magic mirror

* More vendors for drones

* Solar computer whitelist

* EFR review updates

Content.Server/Paper/PaperSystem.cs

@@ -0,0 +1,20 @@
+using Content.Server.UserInterface;
+using Content.Shared.Paper;
+
+namespace Content.Server.Paper
+{
+    public sealed class PaperSystem : EntitySystem
+    {
+        public override void Initialize()
+        {
+            base.Initialize();
+            SubscribeLocalEvent<PaperComponent, BeforeActivatableUIOpenEvent>(AfterUIOpen);
+        }
+
+        private void AfterUIOpen(EntityUid uid, PaperComponent component, BeforeActivatableUIOpenEvent args)
+        {
+            component.Mode = SharedPaperComponent.PaperAction.Read;
+            component.UpdateUserInterface();
+        }
+    }
+}