⚒️ Restructured Sass organisation (#83)

*  🌈  Organise colors with vars only

*  ➕ New file structure

* File restructuring

*  ⚒️ Fix build issue

* Rearranged files

assets/css/base/_helpers.scss

@@ -0,0 +1,18 @@
+.u-no-padding-left {
+  padding-left: 0 !important;
+}
+
+.style__italics {
+  font-style: italic;
+}
+
+.small {
+  font-size: 0.75em;
+}
+
+.help {
+  margin: 1rem 0;
+  li {
+    margin: 0.75rem 0;
+  }
+}