Ember - donation system, bans, loading screen & landing/index page

1. Added an unban endpoint to the server API
2. Added a #unban chat command (Lua)
3. Implemented the ULibPlayerUnBanned hook (Lua) - remember to add the new configuration options to ember_config.lua when upgrading
4. Various minor bug fixes and improvements

Files modified:

1. lua/ember/lua/autorun/client/ember.lua
2. lua/ember/lua/ember/bans.lua
3. lua/ember/lua/ember/init.lua
4. lua/ember/lua/ember_config.lua
5. web/app/Controllers/ApiController.php
6. web/app/Controllers/ServerApiController.php
7. web/app/Events/StoreCreditSaving.php
8. web/app/Middleware/ServerTokenMiddleware.php
9. web/app/Models/StoreCredit.php
10. web/app/Models/User.php
11. web/app/Module.php
12. web/app/routes.php
13. web/bootstrap/app.php
14. web/bootstrap/modules.php
15. web/public/js/adminvue.js
16. web/public/js/app.js
17. web/public/mix-manifest.json
18. web/resources/js/components/BansTable.vue
19. web/resources/js/components/UsersList.vue
20. web/resources/lang/en.php
21. web/resources/views/admin/features.twig
22. web/resources/views/admin/links.twig
23. web/resources/views/admin/loadingscreens.twig
24. web/resources/views/admin/packages.twig
25. web/resources/views/admin/servers.twig
26. web/resources/views/admin/team.twig
27. web/resources/views/layouts/navbar.twig