PLT-3466 E10: Add announcement bar feature (#6509)

* E10 - Add announcement bar feature

* Updates per feedback

* Add component tests and snapshots

* Update snapshots

* Updating color picker UI (#6543)

* Add class to body tag when banner is not dismissable and clean up localstorage items when banner changes

* Fixing links (#6544)

* Updating UI for fixed error bar (#6552)

* Truncating text on fixed banner (#6561)

* Plt 3466 - Error bar link states (#6577)

* Updating error bar hover state

* Updating error bar link states

webapp/sass/base/_structure.scss

@@ -10,6 +10,10 @@ body {
     height: 100%;
     position: relative;
     width: 100%;
+
+    &.error-bar--fixed {
+        padding-top: 22px;
+    }
 }
 
 .sticky {