Warn on untagged relations

(re #3812)

data/core.yaml

@@ -464,11 +464,13 @@ en:
     untagged_point: Untagged point
     untagged_line: Untagged line
     untagged_area: Untagged area
+    untagged_relation: Untagged relation
     many_deletions: "You're deleting {n} features. Are you sure you want to do this? This will delete them from the map that everyone else sees on openstreetmap.org."
     tag_suggests_area: "The tag {tag} suggests line should be area, but it is not an area"
     untagged_point_tooltip: "Select a feature type that describes what this point is."
     untagged_line_tooltip: "Select a feature type that describes what this line is."
     untagged_area_tooltip: "Select a feature type that describes what this area is."
+    untagged_relation_tooltip: "Select a feature type that describes what this relation is."
     deprecated_tags: "Deprecated tags: {tags}"
   zoom:
     in: Zoom In

dist/locales/en.json

@@ -571,11 +571,13 @@
             "untagged_point": "Untagged point",
             "untagged_line": "Untagged line",
             "untagged_area": "Untagged area",
+            "untagged_relation": "Untagged relation",
             "many_deletions": "You're deleting {n} features. Are you sure you want to do this? This will delete them from the map that everyone else sees on openstreetmap.org.",
             "tag_suggests_area": "The tag {tag} suggests line should be area, but it is not an area",
             "untagged_point_tooltip": "Select a feature type that describes what this point is.",
             "untagged_line_tooltip": "Select a feature type that describes what this line is.",
             "untagged_area_tooltip": "Select a feature type that describes what this area is.",
+            "untagged_relation_tooltip": "Select a feature type that describes what this relation is.",
             "deprecated_tags": "Deprecated tags: {tags}"
         },
         "zoom": {

modules/validations/missing_tag.js

@@ -10,12 +10,14 @@ export function validationMissingTag() {
     }
 
     var validation = function(changes, graph) {
-        var warnings = [];
+        var types = ['point', 'line', 'area', 'relation'],
+            warnings = [];
+
         for (var i = 0; i < changes.created.length; i++) {
             var change = changes.created[i],
                 geometry = change.geometry(graph);
 
-            if ((geometry === 'point' || geometry === 'line' || geometry === 'area') && !hasTags(change, graph)) {
+            if (types.indexOf(geometry) !== -1 && !hasTags(change, graph)) {
                 warnings.push({
                     id: 'missing_tag',
                     message: t('validations.untagged_' + geometry),