Refactor ConferenceService to order rooms by priority when including …

…them (#80)

ConferenceService.cs

@@ -18,7 +18,7 @@ public ConferenceService(SwetuggContext context, IMemoryCache cache)
     public Conference? Get(string slug) =>
         ReadThroughCache<Conference?>($"conference-{slug.ToLower()}", () => _context.Conferences
             .AsSplitQuery()
-            .Include(c => c.Rooms)
+            .Include(c => c.Rooms.OrderBy(c => c.Priority))
             .Include(c => c.Sessions.Where(s => s.Published))
                 .ThenInclude(c => c.Speakers.Where(s => s.Published))
                     .ThenInclude(s => s.SpeakerImages)