ISTWCMS-4704: fixing tabs and adding class for tabs modifier

source/_patterns/04-components/tabs/_tabs.twig

-<div class="uw-tabs">
+<div class="uw-tabs{% if tabs_modifier_class %} {{ tabs_modifier_class }}{% endif %}">
 
   <div class="uw-tab" role="tablist" aria-label="Multi-tab-list">
     {% for type in content_list %}
       {% if tab_type == "link" %}
-        <a href="{{ type.url }}" class="uw-tablinks {{ button_modifier_classes }} {% if type.active %}active{% endif %} %}">{{ type.text }}</a>
+        <a href="{{ type.url }}" class="uw-tablinks {{ button_modifier_classes }}{% if type.active %} active{% endif %}">{{ type.text }}</a>
       {% else %}
-        <button role="tab" class="uw-tablinks {{ button_modifier_classes }} "   {% if loop.index == 1 %} aria-selected="true"  {% else %} aria-selected="false" {%  endif %} aria-controls="{{ type }}" id="tab-{{ loop.index }}" tabindex="0">{{ type }}</button>
+        <button role="tab" class="uw-tablinks {{ button_modifier_classes }}" {% if loop.index == 1 %} aria-selected="true"  {% else %} aria-selected="false" {%  endif %} aria-controls="{{ type }}" id="tab-{{ loop.index }}" tabindex="0">{{ type }}</button>
       {% endif %}
     {% endfor %}
   </div>

source/_patterns/04-components/tabs/tabs--link/tabs--link.twig

@@ -6,4 +6,5 @@
   tab_type: 'link',
   content_list: content_list,
   button_modifier_classes: button_modifier_classes,
+  tabs_modifier_class: tabs_modifier_class,
 } %}