fix(news): list Local newest first

Local ranked its reports by severity first. A country's own news now
carries no severity, so in a conflict area GDELT's reports (severity 1
and up) could crowd every one of its stories out of the 40 listed.
Local is now newest first; severity still shows by colour.

Also: readTitle reads Conflicts headlines only, the economy category's
comment and the attribution popover name World News API's category,
and KNOWN-ISSUES names Core's ids for World News API's categories.

src/data/dataCredits.js

@@ -498,7 +498,7 @@ export const DATA_CREDITS = [
       'News: every report is credited to its own publisher and links to the original article; ' +
       'pictures are the publishers’ own, shown from their sites with the publisher named. ' +
       'Places, categories, severity and English headlines are derived automatically, by ' +
-      'bundled rules or by the configured news server, and can be wrong.',
+      'bundled rules, the news provider or the configured news server, and can be wrong.',
   },
   {
     // GDELT's terms ask for a citation and a link.

src/layers/news/model.js

@@ -762,9 +762,10 @@ export function inPolygons(polygons, point) {
 }
 
 /**
- * The reports near `centre` that pass the filters, most severe and newest
- * first: any pin inside `area` (outline polygons), or without one within
- * NEWS_IN_VIEW_RADIUS_KM.
+ * The reports near `centre` that pass the filters, newest first: any pin
+ * inside `area` (outline polygons), or without one within
+ * NEWS_IN_VIEW_RADIUS_KM. Newest, not most severe: an area's own news often
+ * carries no severity, and the area's fighting would otherwise crowd it out.
  */
 export function reportsInView(
   reports,
@@ -786,10 +787,6 @@ export function reportsInView(
         (filters.category === 'all' || r.category === filters.category) &&
         r.pins?.some(near),
     )
-    .sort(
-      (a, b) =>
-        reportSeverity(b) - reportSeverity(a) ||
-        b.publishedAt.localeCompare(a.publishedAt),
-    )
+    .sort((a, b) => b.publishedAt.localeCompare(a.publishedAt))
     .slice(0, limit);
 }

src/layers/news/model.test.mjs

@@ -672,7 +672,7 @@ test('in view: half-degree cells and reports within 500 km of the centre', () =>
     reportsInView([near, far, old, major], centre, filters, NOW).map(
       (r) => r.id,
     ),
-    ['major', 'near'],
+    ['near', 'major'],
   );
   assert.deepEqual(reportsInView([near], null, filters, NOW), []);
   assert.deepEqual(reportsInView([], centre, filters, NOW), []);