Work on better sorting for the IDAA BB posts. Using generated tmp field. Date formats standardized.

src/lib/ae_posts/db_posts.ts

@@ -50,6 +50,10 @@ export interface Post {
     created_on: Date;
     updated_on?: null|Date;
 
+    // Generated fields for sorting locally only
+    tmp_sort_1?: null|string;
+    tmp_sort_2?: null|string;
+
     // Additional fields for convenience (database views)
     post_comment_count?: number;
 }
@@ -116,6 +120,7 @@ export class MySubClassedDexie extends Dexie {
                 post_id,
                 title,
                 full_name, email,
+                tmp_sort_1, tmp_sort_2,
                 enable, hide, priority, sort, group, notes, created_on, updated_on, [updated_on+created_on]`,
             });
     }