implementa impresso de cancelamento da osan quando servidor é desligado.
closes #82

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# On branch master
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# Changes to be committed:
#	modified:   app/Http/Controllers/Admin/FormularioController.php
#	modified:   app/Http/Controllers/Admin/Servidor/ServidorController.php
#	modified:   app/Models/Servidor.php
#	new file:   public/css/admin/impressos/formulario-cancelamento-osan.css
#	new file:   resources/views/admin/impressos/formulario-cancelamento-osan.blade.php
#	modified:   routes/web.php
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# Untracked files:
#	database/dados-logradouro/
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