Merge branch 'dev'

* dev:
  v1.4
  vuefilemanager v1.4-beta.1
  vuefilemanager v1.4-alpha.2
  vuefilemanager v1.5-alpha.1
  editing with shared items in public
  backend update
  backend refactoring
  protected sharing update
  vuex refactoring
  frontend/backend update
  vue frontend update
  vue frontend update
  vue router implemented
  implementing vue router

public/js/main.js.LICENSE.txt

@@ -4,8 +4,14 @@
  * Released under the MIT License.
  */
 
+/*!
+ * vue-i18n v8.17.4 
+ * (c) 2020 kazuya kawaguchi
+ * Released under the MIT License.
+ */
+
 /**
-  * vee-validate v3.2.5
+  * vee-validate v3.3.0
   * (c) 2020 Abdelrahman Awad
   * @license MIT
   */
@@ -20,7 +26,7 @@
  */
 
 /**
- * vuex v3.1.3
+ * vuex v3.3.0
  * (c) 2020 Evan You
  * @license MIT
  */