Use current time for cache break in development

(cherry picked from commit 020ed32fcfab1c6fbe57af5ea650300272c93fd7)

src/Radarr.Http/Frontend/Mappers/CacheBreakerProvider.cs

@@ -1,6 +1,8 @@
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using NzbDrone.Common.Crypto;
+using NzbDrone.Common.EnvironmentInfo;
 using NzbDrone.Common.Extensions;
 
 namespace Radarr.Http.Frontend.Mappers
@@ -28,6 +30,11 @@ namespace Radarr.Http.Frontend.Mappers
                 return resourceUrl;
             }
 
+            if (!RuntimeInfo.IsProduction)
+            {
+                return resourceUrl + "?t=" + DateTime.UtcNow.Ticks;
+            }
+
             var mapper = _diskMappers.Single(m => m.CanHandle(resourceUrl));
             var pathToFile = mapper.Map(resourceUrl);
             var hash = _hashProvider.ComputeMd5(pathToFile).ToBase64();