Fix negative number of trips in ImproveOSM issues

See https://github.com/openstreetmap/iD/pull/5739#issuecomment-460786055

modules/services/improveOSM.js

@@ -267,6 +267,11 @@ export default {
                                     geometry_type: t('QA.improveOSM.geometry_types.' + geoType)
                                 };
 
+                                // -1 trips indicates data came from a 3rd party
+                                if (feature.numberOfTrips === -1) {
+                                    d.desc = t('QA.improveOSM.error_types.mr.description_alt', d.replacements);
+                                }
+
                                 _erCache.data[d.id] = d;
                                 _erCache.rtree.insert(encodeErrorRtree(d));
                             });
@@ -476,4 +481,4 @@ export default {
     getClosedIDs: function() {
         return Object.keys(_erCache.closed).sort();
     }
-};
+};

modules/ui/improveOSM_details.js

@@ -17,6 +17,9 @@ export function uiImproveOsmDetails(context) {
         var unknown = t('inspector.unknown');
 
         if (!d) return unknown;
+
+        if (d.desc) return d.desc;
+
         var errorType = d.error_key;
         var et = dataEn.QA.improveOSM.error_types[errorType];
 
@@ -124,4 +127,4 @@ export function uiImproveOsmDetails(context) {
 
 
     return improveOsmDetails;
-}
+}