ISTWCMS-4053: updating layouts

source/_patterns/03-layouts/layout/layout--fivecol/layout--fivecol.twig

-<div{{ attributes }}>
+{%
+  set classes = [
+  'layout',
+  'layout--uwfourcol',
+  column_class,
+]
+%}
+
+<section{{ attributes.addClass(classes) }}>
 
   <div {{ region_attributes.first.addClass('layout__region', 'layout__region--first') }}>
     {% block content_first %}
-      Layout Region Four Column Layout
+      Layout Region Column one
     {% endblock %}
   </div>
 
   <div {{ region_attributes.second.addClass('layout__region', 'layout__region--second') }}>
     {% block content_second %}
+      Layout Region Column two
     {% endblock %}
   </div>
 
   <div {{ region_attributes.third.addClass('layout__region', 'layout__region--third') }}>
     {% block content_third %}
+      Layout Region Column three
     {% endblock %}
   </div>
 
   <div {{ region_attributes.fourth.addClass('layout__region', 'layout__region--fourth') }}>
     {% block content_fourth %}
+      Layout Region Column four
     {% endblock %}
   </div>
 
   <div {{ region_attributes.fifth.addClass('layout__region', 'layout__region--fifth') }}>
     {% block content_fifth %}
+      Layout Region Column five
     {% endblock %}
   </div>
-</div>
+</section>

source/_patterns/03-layouts/layout/layout--fivecol/layout--fivecol.yml

+column_class: even-split
\ No newline at end of file

source/_patterns/03-layouts/layout/layout--fourcol/layout--fourcol.yml

+column_class: even-split
\ No newline at end of file

source/_patterns/03-layouts/layout/layout--threecol/layout--threecol.yml

-column-classes:
-  - 'even-split'
-  - 'larger-left'
-  - 'larger-middle'
-  - 'larger-right'
\ No newline at end of file
+column_class: even-split
\ No newline at end of file

source/_patterns/03-layouts/layout/layout--twocol/layout--twocol.yml

+column_class: even-split
\ No newline at end of file