increment copyright date to 2022, allow scheduled jobs to support weekly interval, improve dynamic image generation, add defensive logic to router

Oqtane.Client/Modules/Admin/Jobs/Edit.razor

@@ -36,6 +36,7 @@
                     <option value="m">@Localizer["Minute(s)"]</option>
                     <option value="H">@Localizer["Hour(s)"]</option>
                     <option value="d">@Localizer["Day(s)"]</option>
+                    <option value="w">@Localizer["Week(s)"]</option>
                     <option value="M">@Localizer["Month(s)"]</option>
                 </select>
             </div>

Oqtane.Client/Modules/Admin/Jobs/Index.razor

@@ -95,6 +95,9 @@ else
             case "d":
                 result += Localizer["Day"];
                 break;
+            case "w":
+                result += Localizer["Week"];
+                break;
             case "M":
                 result += Localizer["Month"];
                 break;