initial commit from appmail

app/assets/stylesheets/application/global/_utility.scss

@@ -0,0 +1,34 @@
+.u-margin {
+  margin-bottom:25px;
+}
+
+.u-center {
+  text-align:center;
+}
+
+.u-green {
+  color:$green;
+}
+
+.u-orange {
+  color:$orange;
+}
+
+.u-grey {
+  color:#999;
+}
+.u-red {
+  color:$red;
+}
+
+.u-bold {
+  font-weight:600;
+}
+
+.u-link {
+  text-decoration: underline;
+}
+
+.is-hidden {
+  display:none;
+}