initial commit from appmail

app/assets/stylesheets/application/elements/_code_block.scss

@@ -0,0 +1,11 @@
+.codeBlock {
+  background:#909db0;
+  color:#fff;
+  padding:25px;
+  border-radius:4px;
+}
+
+.codeBlock--whitespace {
+  white-space:pre;
+  overflow-x:auto;
+}