Standalone page fix when the annotation itself is deleted

- Separate delete handling for the root annotation
- After delete if shows a "This annotation has been deleted!" sign for this annotation.
- Redaction flow is unaffected

h/css/common.scss

@@ -866,9 +866,10 @@ blockquote {
   margin:0;
 }
 
-
-.center_button {
-  text-align: center;
+.knockout {
+  .center {
+    text-align: center;
+  }
 }
 
 .button_controls {

h/js/displayer.coffee

@@ -22,6 +22,7 @@ class Displayer
     $scope.annotation.reply_count = 0
     $scope.annotation.ref_length =
       if $scope.annotation.references? then $scope.annotation.references.length else 0
+    $scope.full_deleted = false
     @idTable[$scope.annotation.id] = $scope.annotation
     $scope.filter =
       streamfilter
@@ -104,17 +105,21 @@ class Displayer
               unless @idTable[annotation.id]?
                 break
 
-              #Update the reply counter for all referenced annotation
-              for i in [$scope.annotation.ref_length..annotation.references.length-1]
-                reference = annotation.references[i]
-                @idTable[reference].reply_count -= 1
-
-              replies = @idTable[annotation.references[annotation.references.length-1]].replies
-
-              #Find the place to insert annotation
-              pos = replies.indexOf @idTable[annotation.id]
-              replies.splice pos, 1
-              delete @idTable[annotation.id]
+              if $scope.annotation.id = annotation.id
+                $scope.full_deleted = true
+              else
+                #Reply delete
+                #Update the reply counter for all referenced annotation
+                for i in [$scope.annotation.ref_length..annotation.references.length-1]
+                  reference = annotation.references[i]
+                  @idTable[reference].reply_count -= 1
+
+                replies = @idTable[annotation.references[annotation.references.length-1]].replies
+
+                #Find the place to insert annotation
+                pos = replies.indexOf @idTable[annotation.id]
+                replies.splice pos, 1
+                delete @idTable[annotation.id]
 
     if $scope.annotation.referrers?
       $scope.manage_new_data $scope.annotation.referrers, 'past'