hide edit link if site.edit_url isnt configured
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		@@ -2,8 +2,10 @@
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   <nav>
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      <p>
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         <span class="copy">©</span> {{ 'now' | date: '%Y' }} {{ site.copyright_owner.full_name }}. 
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         <a href="/legal/">MIT License</a>. 
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         <a class="edit" href="{{ site.edit_url | append: page.path }}">Edit</a>.
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         <a href="{{ site.license.url | default: '/legal/' }}">{{ site.license.name }}</a>. 
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         {% if site.edit_url != '' or site.edit_url != nil %}
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            <a class="edit" href="{{ site.edit_url | append: page.path }}">Edit</a>.
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         {% endif %}
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      </p>
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   </nav>
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   <nav>
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