Applied fixes from StyleCI

give newbees a package service providers section, preventing adding after application

when i started, i ended up putting all package specific service providers just at the bottom of the application service providers. But when making a route group like domain.com/{keyword}, the packages that are registering its own url's, not work anymore (like now when i installed the translations manager from barryvdh). When putting them above the app specific, everything works. So just give it to the user as a default place?

[5.2] Remove default APP_KEY value

Signed-off-by: crynobone <crynobone@gmail.com>

[5.3] fix wrong spelling

[5.3] web group sort by name

Remove removed routes file

applications

Modify post-root-package-install script.

Idempotence.

[5.3] Make use of Bootstrap 3.3.7 with jQuery 3 support