[Backport] Improving epics progress

app/modules/epics/dashboard/epic-row/epic-row.controller.coffee

@@ -40,13 +40,12 @@ class EpicRowController
         if @.epic.getIn(['status_extra_info', 'is_closed']) == true
             @.percentage = "100%"
         else
-            opened = @.epic.getIn(['user_stories_counts', 'opened'])
-            closed = @.epic.getIn(['user_stories_counts', 'closed'])
-            total = opened + closed
+            progress = @.epic.getIn(['user_stories_counts', 'progress'])
+            total = @.epic.getIn(['user_stories_counts', 'total'])
             if total == 0
                 @.percentage = "0%"
             else
-                @.percentage = "#{closed * 100 / total}%"
+                @.percentage = "#{progress * 100 / total}%"
 
     canEditEpics: () ->
         return @projectService.hasPermission("modify_epic")

app/modules/epics/dashboard/epic-row/epic-row.controller.spec.coffee

@@ -68,8 +68,8 @@ describe "EpicRow", ->
                     is_closed: false
                 }
                 user_stories_counts: {
-                    opened: 10,
-                    closed: 10
+                    total: 10,
+                    progress: 5
                 }
             })
         }
@@ -83,8 +83,8 @@ describe "EpicRow", ->
                     is_closed: false
                 }
                 user_stories_counts: {
-                    opened: 0,
-                    closed: 0
+                    total: 10,
+                    progress: 0
                 }
             })
         }

app/modules/epics/dashboard/epic-row/epic-row.jade

@@ -27,7 +27,7 @@
         )
         tg-svg(
             svg-icon="icon-arrow-down"
-            ng-if="vm.epic.getIn(['user_stories_counts', 'opened']) || vm.epic.getIn(['user_stories_counts', 'closed'])"
+            ng-if="vm.epic.getIn(['user_stories_counts', 'total'])"
         )
 
     .project(ng-if="vm.column.project")