Hide accessibility announcement (#163)

Author: AbeJellinek

src/common/stylesheets/components/_a11y-announcer.scss

@@ -0,0 +1,4 @@
+// Make visually hidden
+#a11yAnnouncement {
+	clip-path: inset(50%);
+}

src/common/stylesheets/main.scss

@@ -37,5 +37,5 @@
 @import "components/split-view";
 @import "components/outline-view";
 @import "components/thumbnails-view";
-@import "components/other";
+@import "components/a11y-announcer";
 @import "components/other";