- Update the way to use the data records on Vuex with Getters!

- Fix: mongodb call passing array todos and categiroes already splitted

server/tests/seed/seed.js

@@ -81,7 +81,6 @@ const todos = [{
   descr: "Primo Task Esempio",
   enableExpiring: false,
   expiring_at: new Date(),
-  id_next: "10000000",
   id_prev: "0",
   modified: false,
   modify_at: new Date(),
@@ -98,7 +97,6 @@ const todos = [{
   descr: "Secondo Task Esempio",
   enableExpiring: false,
   expiring_at: new Date(),
-  id_next: "10000000",
   id_prev: "1",
   modified: false,
   modify_at: new Date(),
@@ -115,7 +113,6 @@ const todos = [{
   descr: "Terzo Task Esempio",
   enableExpiring: false,
   expiring_at: new Date(),
-  id_next: "10000000",
   id_prev: "1",
   modified: false,
   modify_at: new Date(),
@@ -132,7 +129,6 @@ const todos = [{
   descr: "Nuovo Quarto Task Esempio da Inserire",
   enableExpiring: false,
   expiring_at: new Date(),
-  id_next: "10000000",
   id_prev: "2",
   modified: false,
   modify_at: new Date(),