Merge pull request laravel#3738 from laravel/backport

[5.1] Backport various changes

Merge pull request laravel#3733 from jcxm360/patch-1

Update Kernel.php

Merge pull request laravel#3699 from barryvdh/patch-1

[5.2] Use ComposerScripts

update default routes file

Merge pull request laravel#3687 from barryvdh/patch-1

Remove pre-update-cmd

add to gitignore

update dependencies

Merge pull request laravel#3491 from laravel/analysis-zObJlq

Applied fixes from StyleCI

added throttles logins trait by default

Merge pull request laravel#3435 from tonglil/master

Use double quotes for html attributes