Resolve "When using all 3 columns of a section, the middle column holds 9 bootstrap columns instead of 6"

Closes #47 (closed)

patterns/molecules/row/row.html.twig

@@ -95,7 +95,7 @@
 {%  set mainclasses = [
 	'component-row__column',
 	'component-row__center',
-	'col-md-9',
+	'col-md-6',
 	'col-sm-12',
 	'col-xs-12',
 ]
@@ -146,6 +146,28 @@
 		'col-xs-12',
 	]
 	%}
+{% elseif hasleft is not empty and hasright is not empty  %}
+	{%
+		set mainclasses = [
+		'component-row__column',
+		'component-row__center',
+		'section-has-no-column',
+		'col-md-6',
+		'col-sm-12',
+		'col-xs-12',
+	]
+	%}
+{% else %}
+	{%
+		set mainclasses = [
+		'component-row__column',
+		'component-row__center',
+		'section-has-no-column',
+		'col-md-9',
+		'col-sm-12',
+		'col-xs-12',
+	]
+	%}
 {% endif %}
 
 {% if variants.box_effects.value == 1 and variants.box_effects.value != '' %}