merged branch acasademont/patch-1 (PR #781)

Commits
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ee87848 Little typo
c31dd7b The empty test now also checks for empty arrays

Discussion
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The empty test now also checks for empty arrays

Little change in the docs to reflect that, as i had to check the source code to see if it worked

doc/tests/empty.rst

@@ -5,7 +5,7 @@
 
 .. code-block:: jinja
 
-    {# evaluates to true if the foo variable is null, false, or the empty string #}
+    {# evaluates to true if the foo variable is null, false, an empty array, or the empty string #}
     {% if foo is empty %}
         ...
     {% endif %}