Fix snackbar/FAB overlap in edit categories view

app/src/main/res/layout/categories_controller.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
@@ -27,4 +27,4 @@
         android:layout_gravity="center"
         android:visibility="gone" />
 
-</FrameLayout>
+</androidx.coordinatorlayout.widget.CoordinatorLayout>