Change Simplified Chinese lang subdirectory name to 'zh-CN' (jeroenno…

…ten#238)

Add missing isset()

add support for laravel 5.7 (jeroennoten#241)

Datatables bootstrap style fix (jeroennoten#229)

* Renable bootstrap compatible datatables

* Datatables version update

* Update comment

Feature/enable slimscroll (jeroennoten#171)

* added slimscroll (minified) version 1.3.8

* added slimscroll (minified) version 1.3.8

add support for laravel 5.6 (jeroennoten#181)

Fix jeroennoten#134

Update AdminLTE to v2.4.0

Update README.md

Fix make:adminlte for Laravel 5.4.31+ (jeroennoten#106)

* Fix make:adminlte for Laravel 5.4.31+

* Style fixes

* Style fix