Replace changeset definition with tag

config/locales/en.yml

@@ -1181,10 +1181,9 @@ en:
         A <strong>node</strong> is a point on the map, like a single restauraunt or a tree.
       way_html: |
         A <strong>way</strong> is a line or area, like a road, stream, lake or building.
-      changeset_html: |
-        A <strong>changeset</strong> is <abbr title='changesets can have comments, like "adding a
-        road here", that let other users know what you were intending to change and why'>group of
-        changes</abbr> to the map saved by a user.
+      tag_html: |
+        A <strong>tag</strong> is a bit of data about a node or way, like a
+        restaurant's name or a road's speed limit.
     questions:
       title: Any questions?
       paragraph_1_html: |