Compile CSS with @import statements

[adardesign]

While compiling CSS resources, also inline the @import resources and then compile/build

[eliroth]

+1

[eknown]

+1!

[jdonaldson10]

+1

any progress here?

I did see that @theonlylawislove started up a project aimed at resolving this
https://github.com/theonlylawislove/Adept.Combres

based on the following discussions over at codeplex:
https://combres.codeplex.com/discussions/362265

[buunguyen]

You can certainly try Adept.Combres. If it works well, I would appreciate a PR to merge into the core.