chore(scss): fixed some typos, removed old themes, added variables

Author: naomiblack

src/main.scss

@@ -1,7 +1,7 @@
 @import
 
-// Theme
-"core/style/theme/theme",
+// Variables
+"core/style/variables",
 
 // Base
 "core/style/mixins",
@@ -22,7 +22,7 @@
 "components/divider/divider",
 "components/icon/icon",
 "components/list/list",
-"components/progressCircular/progressCircular";
+"components/progressCircular/progressCircular",
 "components/progressLinear/progressLinear",
 "components/radioButton/radio-button",
 "components/sidenav/sidenav",