Update installation form

Set website to not required
Add web address placeholder as a hint
Update validation message for invalid url entry

resources/lang/de/validation.php

@@ -77,7 +77,7 @@ return [
     'string'               => 'Das :attribute muss ein String sein.',
     'timezone'             => 'Das :attribute muss eine gültige Zeitzone sein.',
     'unique'               => 'Das :attribute ist bereits vergeben.',
-    'url'                  => 'Das :attribute Format ist ungültig.',
+    'url'                  => 'Bitte geben Sie eine gültige Domain mit http/https ein.',
 
     /*
     |--------------------------------------------------------------------------

resources/lang/en/validation.php

@@ -77,7 +77,7 @@ return [
     'string'               => 'The :attribute must be a string.',
     'timezone'             => 'The :attribute must be a valid zone.',
     'unique'               => 'The :attribute has already been taken.',
-    'url'                  => 'The :attribute format is invalid.',
+    'url'                  => 'Please enter a valid domain with http/https.',
 
     /*
     |--------------------------------------------------------------------------

resources/lang/id/validation.php

@@ -77,7 +77,7 @@ return [
     'string'               => 'Isian :attribute harus berupa string.',
     'timezone'             => 'Isian :attribute harus berupa zona waktu yang valid.',
     'unique'               => 'Isian :attribute sudah ada sebelumnya.',
-    'url'                  => 'Format isian :attribute tidak valid.',
+    'url'                  => 'Mohon isi domain yang valid beserta http/https.',
 
     /*
     |---------------------------------------------------------------------------------------

resources/views/auth/app-install.blade.php

@@ -18,7 +18,7 @@
                 <div class="col-sm-6">
                     <p>{{ __('app_install.agency_info_text') }}</p>
                     {!! FormField::text('agency_name', ['required' => true, 'label' => __('agency.name')]) !!}
-                    {!! FormField::text('agency_website', ['required' => true, 'label' => __('agency.website')]) !!}
+                    {!! FormField::text('agency_website', ['label' => __('agency.website'), 'placeholder' => 'https://yourdomain.com']) !!}
                 </div>
             </div>
             <hr style="margin: 10px 0;">