feat: Add sign out onclick to nav bar button

[AbhiPrasad]

fixes https://github.com/uwblueprint/shoe-project/issues/318

Also cleans up some css here and there (we were missing curly braces for some css selectors)

Here is the patch that matters:

ui/src/pages/Admin/AllStories/index.tsx

export const AllStories: React.FC = () => {
const { data: tagOptions, error: tagError } = useSWR<string[]>("/api/tags");
+  const { signOut } = useAuth();

const [state, dispatch] = useReducer(allStoriesReducer, INIT_STATE); const isFilterOpen = Boolean(state.anchorEl); @@ -557,7 +563,7 @@ export const AllStories: React.FC = () => { <AllStoriesAppBar handlePublishMap={publishMap} isPublishDisabled={state.changedVisibility.length == 0}

• handleLogout={null}
• handleLogout={signOut} /> ```