Change backspace behavior

There is a setting so that the backspace can delete messages instead of archiving.
I think that backspace must delete the message, but like many other clients, you have the choice.

internal_packages/thread-list/lib/thread-list.cjsx

@@ -284,13 +284,18 @@ class ThreadList extends React.Component
 
   _onRemoveFromView: =>
     threads = @_threadsForKeyboardAction()
+    backspaceDelete = NylasEnv.config.get('core.reading.backspaceDelete')
     if threads
-      if FocusedMailViewStore.mailView().canArchiveThreads()
+      if backspaceDelete
-        removeMethod = TaskFactory.taskForArchiving
+        if FocusedMailViewStore.mailView().canTrashThreads()
-      else if FocusedMailViewStore.mailView().canTrashThreads()
+          removeMethod = TaskFactory.taskForMovingToTrash
-        removeMethod = TaskFactory.taskForMovingToTrash
+        else 
-      else
+          return
-        return
+      else 
+        if FocusedMailViewStore.mailView().canArchiveThreads()
+          removeMethod = TaskFactory.taskForArchiving
+        else
+          return
 
       task = removeMethod
         threads: threads

src/config-schema.coffee

@@ -57,6 +57,10 @@ module.exports =
             type: 'boolean'
             default: true
             title: "Automatically load images in viewed messages"
+          backspaceDelete:
+            type: 'boolean'
+            default: false
+            title: "Use backspace to delete messages"
       sending:
         type: 'object'
         properties: