add theme

themes/butterfly/layout/includes/widget/card_ad.pug

@@ -0,0 +1,3 @@
+if theme.ad && theme.ad.aside
+  .card-widget.ads-wrap
+    != theme.ad.aside

themes/butterfly/layout/includes/widget/card_announcement.pug

@@ -0,0 +1,7 @@
+if theme.aside.card_announcement.enable
+  .card-widget.card-announcement
+    .item-headline
+      i.fas.fa-bullhorn.fa-shake
+      span= _p('aside.card_announcement')
+    .announcement_content!= theme.aside.card_announcement.content
+    #welcome-info

themes/butterfly/layout/includes/widget/card_archives.pug

@@ -0,0 +1,7 @@
+if theme.aside.card_archives.enable
+  .card-widget.card-archives
+    - let type = theme.aside.card_archives.type || 'monthly'
+    - let format = theme.aside.card_archives.format || 'MMMM YYYY'
+    - let order = theme.aside.card_archives.order || -1
+    - let limit = theme.aside.card_archives.limit === 0 ? 0 : theme.aside.card_archives.limit || 8
+    != aside_archives({ type:type, format: format, order: order, limit: limit })