Fix problem with moving groups (#1524)

Author: leotsarev

src/JoinRpg.Portal/Controllers/GameGroupsController.cs

@@ -440,7 +440,7 @@ private static T FillFromCharacterGroup<T>(T viewModel, IClaimSource field)
         }
 
         [MasterAuthorize(Permission.CanEditRoles)]
-        [HttpPost]
+        [HttpGet]
         public Task<ActionResult> MoveUp(int projectId, int charactergroupId, int parentCharacterGroupId, int currentRootGroupId) => MoveImpl(projectId, charactergroupId, parentCharacterGroupId, currentRootGroupId, -1);
 
         private async Task<ActionResult> MoveImpl(int projectId, int charactergroupId, int parentCharacterGroupId, int currentRootGroupId, short direction)
@@ -460,7 +460,7 @@ private async Task<ActionResult> MoveImpl(int projectId, int charactergroupId, i
         }
 
         [MasterAuthorize(Permission.CanEditRoles)]
-        [HttpPost]
+        [HttpGet]
         public Task<ActionResult> MoveDown(int projectId, int charactergroupId, int parentCharacterGroupId, int currentRootGroupId) => MoveImpl(projectId, charactergroupId, parentCharacterGroupId, currentRootGroupId, +1);
 
         [HttpGet, MasterAuthorize()]

src/JoinRpg.WebPortal.Models/Characters/CharacterGroupListViewModel.cs

@@ -103,6 +103,10 @@ public IList<CharacterGroupListItemViewModel> Generate()
                 vm.ChildGroups = childGroups
                     .Select(childGroup => GenerateFrom(childGroup, deepLevel + 1, pathForChildren))
                     .WhereNotNull()
+                    .ToList();
+
+                _ = vm.ChildGroups
+                    .Where(x => !x.IsSpecial)
                     .MarkFirstAndLast();
 
                 return vm;