Add branch overiew page (#2108)

* Add branch overiew page

* fix changed method name on sub menu

* remove unused code

modules/setting/setting.go

@@ -365,6 +365,12 @@ var (
 			Schedule       string
 			UpdateExisting bool
 		} `ini:"cron.sync_external_users"`
+		DeletedBranchesCleanup struct {
+			Enabled    bool
+			RunAtStart bool
+			Schedule   string
+			OlderThan  time.Duration
+		} `ini:"cron.deleted_branches_cleanup"`
 	}{
 		UpdateMirror: struct {
 			Enabled    bool
@@ -419,6 +425,17 @@ var (
 			Schedule:       "@every 24h",
 			UpdateExisting: true,
 		},
+		DeletedBranchesCleanup: struct {
+			Enabled    bool
+			RunAtStart bool
+			Schedule   string
+			OlderThan  time.Duration
+		}{
+			Enabled:    true,
+			RunAtStart: true,
+			Schedule:   "@every 24h",
+			OlderThan:  24 * time.Hour,
+		},
 	}
 
 	// Git settings