Alignement à gauche du CTA s'il n'a pas de texte (#866)

assets/sass/_theme/blocks/call_to_action.sass

@@ -185,7 +185,7 @@ $button-selector: "a:first-child"
                 grid-column: 8/13
                 figcaption
                     margin-top: $spacing-2
-        .call_to_action--without-image
+        .call_to_action--without-image:not(.call_to_action--without_text)
             display: block
             > div
                 @include grid

layouts/partials/blocks/templates/call_to_action.html

@@ -6,7 +6,7 @@
   <div class="{{ $block_class }}">
     <div class="container">
       <div class="block-content">
-        <div class="call_to_action call_to_action--with{{ if not .image }}out{{ end }}-image {{ if $block.title }}call_to_action--with-title{{ end }}">
+        <div class="call_to_action call_to_action--with{{ if not .image }}out{{ end }}-image {{ if $block.title }}call_to_action--with-title{{ end }} {{- if not .top.description }} call_to_action--without_text {{ end -}}">
           <div>
             {{ partial "blocks/top.html" $block.top }}
             {{- if .buttons }}