Allow swap to be assigned as -1

Author: DaneEveritt

app/Repositories/ServerRepository.php

@@ -398,7 +398,7 @@ public function changeBuild($id, array $data)
             'add_additional' => 'array',
             'remove_additional' => 'array',
             'memory' => 'integer|min:0',
-            'swap' => 'integer|min:0',
+            'swap' => 'integer|min:-1',
             'io' => 'integer|min:10|max:1000',
             'cpu' => 'integer|min:0',
             'disk' => 'integer|min:0'

resources/views/admin/servers/new.blade.php

@@ -125,7 +125,7 @@
             </div>
             <div class="row">
                 <div class="col-md-12">
-                    <p class="text-muted"><small>If you do not want to assign swap space to a server simply put <code>0</code> for the value. We suggest leaving OOM Killer enabled unless you know what you are doing, disabling it could cause your server to hang unexpectedly.</small><p>
+                    <p class="text-muted"><small>If you do not want to assign swap space to a server simply put <code>0</code> for the value, or <code>-1</code> to allow unlimited swap space. If you want to disable memory limiting on a server simply enter <code>0</code> into the memory field. We suggest leaving OOM Killer enabled unless you know what you are doing, disabling it could cause your server to hang unexpectedly.</small><p>
                 </div>
             </div>
             <div class="row">