Re-add outline (#4474)

* Re-add outline

* respect default of web browser

app/javascript/styles/components.scss

@@ -466,10 +466,6 @@
   overflow: hidden;
   white-space: pre-wrap;
 
-  &:focus {
-    outline: rgba($ui-highlight-color, 0.7) solid 2px;
-  }
-
   .emojione {
     width: 18px;
     height: 18px;
@@ -571,12 +567,6 @@
     }
   }
 
-  &:focus,
-  &.status-direct:focus {
-    outline: 0;
-    background-color: lighten($ui-base-color, 10%);
-  }
-
   &.light {
     .status__relative-time {
       color: $ui-primary-color;