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/utils/utils.jsx

@@ -1348,3 +1348,16 @@ export function isEmptyObject(object) {
 export function updateWindowDimensions(component) {
     component.setState({width: window.innerWidth, height: window.innerHeight});
 }
+
+export function removePrefixFromLocalStorage(prefix) {
+    const keys = [];
+    for (let i = 0; i < localStorage.length; i++) {
+        if (localStorage.key(i).startsWith(prefix)) {
+            keys.push(localStorage.key(i));
+        }
+    }
+
+    for (let i = 0; i < keys.length; i++) {
+        localStorage.removeItem(keys[i]);
+    }
+}