Refactor all Buefy form submit buttons, per Chrome behavior

ugh, what a pain.  and turns out i'd previously ran into this same issue for
jQuery, per commit e945ebe325

tailbone/templates/page.mako

@@ -43,6 +43,8 @@
         methods: {}
     }
 
+    let ThisPageData = {}
+
   </script>
 </%def>
 
@@ -56,6 +58,8 @@
   ${self.finalize_page_components()}
   <script type="text/javascript">
 
+    ThisPage.data = function() { return ThisPageData }
+
     Vue.component('this-page', ThisPage)
 
     new Vue({