Fix debug log submission loading UX

This flow broke a bit with transition to modal debug log.

Restructure such that the loading class can be applied to an appropriate
element inside the modal. Ensure that the input elements are hidden when
submit is clicked, the result elements are shown when the log upload is
completed.

// FREEBIE

background.html

@@ -321,8 +321,8 @@
         <button class='close'>{{ cancel }}</button>
       </div>
       <div class='result'>
-        <a target='_blank'></a>
-        <div><button class='close'>{{ close }}</button></div>
+        <a class='hide' target='_blank'></a>
+        <div class='hide'><button class='close'>{{ close }}</button></div>
       </div>
     </div>
   </script>

js/views/debug_log_view.js

@@ -30,12 +30,13 @@
         submit: function(e) {
             e.preventDefault();
             console.post(this.$('textarea').val()).then(function(url) {
-                this.$el.removeClass('loading');
-                var link = this.$('.result').show().find('a');
+                this.$('.loading').removeClass('loading');
+                var link = this.$('.result').find('a');
                 link.attr('href', url).text(url);
+                this.$('.result .hide').removeClass('hide');
             }.bind(this));
-            this.$('form').remove();
-            this.$el.addClass('loading');
+            this.$('.buttons, textarea').remove();
+            this.$('.result').addClass('loading');
         }
     });
 

stylesheets/_global.scss

@@ -451,9 +451,10 @@ $avatar-size: 44px;
   }
 
   .result {
-    display: none;
     text-align: center;
-    -webkit-user-select: text;
+    a {
+      -webkit-user-select: text;
+    }
   }
 }
 .modal {

stylesheets/manifest.css

@@ -353,9 +353,9 @@ img.emoji {
     color: black;
     box-shadow: 0 0 10px -3px rgba(97, 97, 97, 0.7); }
 .debug-log .result {
-  display: none;
-  text-align: center;
-  -webkit-user-select: text; }
+  text-align: center; }
+  .debug-log .result a {
+    -webkit-user-select: text; }
 
 .modal {
   position: absolute;