switching index file from css to scss, remove test css

Author: fiedl

app/javascript/matestack-ui-core/index.js

@@ -7,7 +7,7 @@ import matestackEventHub from '../../../app/concepts/matestack/ui/core/js/event-
 import componentMixin from '../../../app/concepts/matestack/ui/core/component/component'
 import matestackUiCore from '../../../app/concepts/matestack/ui/core/js/core'
 
-import styles from './styles/index.css'
+import styles from './styles/index.scss'
 
 const MatestackUiCore = {
   Vue,

app/javascript/matestack-ui-core/styles/index.css

@@ -0,0 +1,5 @@
+// glob imports are not supported out of the box.
+// 
+// @import "../../../concepts/matestack/ui/core/**/*.scss";
+// @import "../../../concepts/matestack/ui/core/**/*.sass";
+// @import "../../../concepts/matestack/ui/core/**/*.css";