Auto-update functionality #449 (#544)

* Convert tar to zip file for updater

* Add update section to maintenance

resources/views/admin/maintenance/index.blade.php

@@ -4,6 +4,12 @@
 @section('content')
   @include('flash::message')
 
+  <div class="card border-blue-bottom">
+    <div class="content">
+      @include('admin.maintenance.update')
+    </div>
+  </div>
+
   <div class="card border-blue-bottom">
     <div class="content">
       @include('admin.maintenance.cron')

resources/views/admin/maintenance/update.blade.php

@@ -0,0 +1,22 @@
+<div class="row">
+  <div class="col-sm-12">
+    <div class="form-container">
+      <h6><i class="fas fa-clock"></i>
+        &nbsp;Update
+      </h6>
+      <div class="row" style="padding-top: 5px">
+        <div class="col-sm-12">
+
+          @if ($new_version)
+            <p>An update to version {{ $new_version_tag }} is available.</p>
+            {{ Form::open(['route' => 'admin.maintenance.update']) }}
+            {{ Form::button('Update', ['type' => 'submit', 'class' => 'btn btn-success']) }}
+            {{ Form::close() }}
+          @else
+            <p>There is no new version available</p>
+          @endif
+        </div>
+      </div>
+    </div>
+  </div>
+</div>