Allow configurable less and scss import paths

[grusch-it]

In some cases it would be helpful to be able to add additional import paths for especially sass.

Using configurable import paths it would be possible to use e.g. zurbs foundation libsass template out of the box. Currently you have to manually change all imports for all the foundation components to relative ones, which is quite annoying at the moment.

With this solution anyone could add import paths using the initconfig.php.

[leofeyer]

I wonder if the template can be complied with SASS 0.12?

[grusch-it]

All foundation components do compile without any errors using leafo/scssphp which is used by Contao (tested many times with 3.3.3 and 3.3.4).

[leofeyer]

So, am I getting this right: to use the libsass template, you have to adjust two @import directives, but you prefer to adjust the initconfig.php file instead and add an import path to a global array, which is then added to the parser?

[grusch-it]

Exactly. It's just nice to have and would make things a little bit easier.