bootstrap/paths.php disappeared

Fixing php artisan serve functionality
minor spelling/grammar corrections
Updated CSRF middleware reference
Update RouteServiceProvider.php

Removed the CSRF provider as it is specified in the Kernel.
new logout-method naming
Remove exception handler. Move to core.
Prevent TokenMismatchException for HTTP OPTIONS requests

`OPTIONS` HTTP requests should be treated in the same way than `GET` requests by the `VerifyCsrfToken` middleware. Otherwise, an exception is thrown, thus preventing any `OPTIONS` route to work.
Merge pull request #3114 from matism/develop

new logout-method naming
Merge pull request #3106 from hannesvdvreken/patch-2

fix php artisan serve functionality with hardcoded values
Stub out an app service provider.
Merge branch 'config' into develop
Add to compile.
Working on middleware.
Merge pull request #3112 from nblackburn/patch-1

Updated CSRF middleware reference
Merge pull request #3118 from miclf/patch-1

Prevent TokenMismatchException for HTTP OPTIONS requests
Tweak wording.
Merge pull request #3108 from pascalschwientek/patch-1

minor spelling/grammar corrections
Fix redirects.
Fix file.
Terminate the request after sending.