Flag features that mention Google in the "source" tag (close #6135)

dist/locales/en.json

@@ -1588,6 +1588,16 @@
                 "message": "{feature} has the generic name \"{name}\"",
                 "tip": "Names should be the actual, on-the-ground names of features."
             },
+            "incompatible_source": {
+                "title": "Incompatible Data Sources",
+                "google": {
+                    "feature": {
+                        "message": "{feature} lists Google as a data source"
+                    },
+                    "tip": "Google products are proprietary and must not be used as references."
+                },
+                "tip": "Source data must be licensed in a manner compatible with OpenStreetMap."
+            },
             "many_deletions": {
                 "title": "Many Deletions",
                 "points-lines-areas": {
@@ -1682,6 +1692,9 @@
                 "remove_private_info": {
                     "annotation": "Removed private information."
                 },
+                "remove_proprietary_data": {
+                    "title": "Remove any proprietary data"
+                },
                 "remove_tag": {
                     "title": "Remove the tag",
                     "annotation": "Removed tag."