Improve local storage and fix expediente task strature

src/app/models/Expediente.ts

@@ -0,0 +1,16 @@
+
+export interface ExpedienteFullTaskWorkflowInstanceDataFields {
+    FolderID: number;
+    Sender: string;
+    Subject: string;
+    Status: string;
+}
+
+export interface ExpedienteFullTask {
+    serialNumber: string;
+    taskStartDate: string;
+    workflowDisplayName: string;
+    activityInstanceName: string;
+    totalDocuments: number;
+    workflowInstanceDataFields: ExpedienteFullTaskWorkflowInstanceDataFields;
+}