Reintroduce outline around confirmation dialog buttons

It was very hard to tell which button was selected without the standard
outline.

FREEBIE

stylesheets/_conversation.scss

@@ -637,14 +637,9 @@ li.entry .error-icon-container {
         margin-left: 10px;
         background-color: $grey_l;
         border-radius: $border-radius;
-        outline: none;
         padding: 5px 8px;
         border: 1px solid $grey_l2;
 
-        &:focus {
-          border-color: $grey_l4;
-        }
-
         &:hover {
           background-color: $grey_l2;
           border-color: $grey_l3;

stylesheets/_global.scss

@@ -45,7 +45,6 @@ body {
   line-height: $button-height;
   padding: 0;
   border: 0;
-  outline: 0;
 }
 
 button {

stylesheets/manifest.css

@@ -50,8 +50,7 @@ body {
   height: 24px;
   line-height: 24px;
   padding: 0;
-  border: 0;
-  outline: 0; }
+  border: 0; }
 
 button {
   cursor: pointer;
@@ -1500,11 +1499,8 @@ li.entry .error-icon-container {
       margin-left: 10px;
       background-color: #f3f3f3;
       border-radius: 5px;
-      outline: none;
       padding: 5px 8px;
       border: 1px solid #d9d9d9; }
-      .confirmation-dialog .content .buttons button:focus {
-        border-color: #8d8d8d; }
       .confirmation-dialog .content .buttons button:hover {
         background-color: #d9d9d9;
         border-color: silver; }