Draft: Updates Slick Extra package
Updates Slick Extra package to use the new functionality. This update needed for the sites that use the package as a dependency to upgrade to Slick v1.0 functionality
- uses updated Slicker repository. Upstream merged at https://github.com/migamake/Slicker
- updates LTS usage
- remove usage of old functions and uses new functionality
Edited by Sergey Bushnyak