feat: enhance admin ui with responsive design and ux improvements

- add podcast sidebar navigation
- add podcast dashboard with latest episodes
- add pagination to podcast episodes
- add components helper to reuse ui components (button, data_table, etc.)
- enhance podcast and episode forms by splitting them into form sections
- add hint tooltips to podcast and episode forms
- transform radio inputs as buttons for better ux
- replace explicit field by parental_advisory
- replace author field by publisher
- add podcasts_categories table to set multiple categories
- use choices.js to enhance multiselect fields
- update Language files
- update js dependencies to latest versions

closes #31, #9

app/Controllers/Admin/User.php

@@ -86,7 +86,7 @@ class User extends BaseController
         // Force user to reset his password on first connection
         $user->forcePasswordReset();
 
-        if (!$userModel->save($user)) {
+        if (!$userModel->insert($user)) {
             return redirect()
                 ->back()
                 ->withInput()
@@ -150,7 +150,7 @@ class User extends BaseController
         $userModel = new UserModel();
         $this->user->forcePasswordReset();
 
-        if (!$userModel->save($this->user)) {
+        if (!$userModel->update($this->user->id, $this->user)) {
             return redirect()
                 ->back()
                 ->with('errors', $userModel->errors());
@@ -184,7 +184,7 @@ class User extends BaseController
         // TODO: add ban reason?
         $this->user->ban('');
 
-        if (!$userModel->save($this->user)) {
+        if (!$userModel->update($this->user->id, $this->user)) {
             return redirect()
                 ->back()
                 ->with('errors', $userModel->errors());
@@ -205,7 +205,7 @@ class User extends BaseController
         $userModel = new UserModel();
         $this->user->unBan();
 
-        if (!$userModel->save($this->user)) {
+        if (!$userModel->update($this->user->id, $this->user)) {
             return redirect()
                 ->back()
                 ->with('errors', $userModel->errors());