clean up and prepare for management frontend

wahlfang/settings/base.py

wahlfang/settings/development.py

wahlfang_web/src/App.js

wahlfang_web/src/api/index.js

wahlfang_web/src/api/management.js

wahlfang_web/src/components/AuthenticatedRoute.js

wahlfang_web/src/components/Header.js

wahlfang_web/src/components/Layout.js

wahlfang_web/src/index.js

wahlfang_web/src/pages/ManagementApp.js

wahlfang_web/src/pages/SpectatorView.js

wahlfang_web/src/pages/VoteApp.js

wahlfang_web/src/pages/management/Help.js

wahlfang_web/src/pages/vote/Application.js

wahlfang_web/src/pages/vote/Help.js

wahlfang_web/src/pages/vote/Home.js

wahlfang_web/src/pages/vote/Login.js

wahlfang_web/src/pages/vote/Logout.js

wahlfang_web/src/pages/vote/PerformVote.js

wahlfang_web/src/state/index.js