merge close button props and localized aria-label and title

Signed-off-by: Julio Ortega <julio.ortega@dialpad.com>

Author: juliodialpad

packages/dialtone-vue2/components/popover/popover_default.story.vue

@@ -19,6 +19,7 @@
       :initial-focus-element="$attrs.initialFocusElement"
       :content-width="$attrs.contentWidth"
       :show-close-button="$attrs.showCloseButton"
+      :close-button-props="$attrs.closeButtonProps"
       :header-class="$attrs.headerClass"
       :footer-class="$attrs.footerClass"
       :max-height="$attrs.maxHeight"

packages/dialtone-vue2/components/popover/popover_header_footer.vue

@@ -100,7 +100,7 @@ export default {
 
   computed: {
     enhancedCloseButtonProps () {
-      return Object.assign({}, ...this.closeButtonProps, ...$ta('CLOSE_BUTTON'));
+      return Object.assign({}, $ta('CLOSE_BUTTON'), this.closeButtonProps);
     },
   },