added back content_block headerButtonGroup due to backwards compatibility and modified header.html.ep to fit changes
diff --git a/dev/scss/base/icons.scss b/dev/scss/base/icons.scss
index ae4974a..3d758c0 100644
--- a/dev/scss/base/icons.scss
+++ b/dev/scss/base/icons.scss
@@ -2,6 +2,7 @@
  * Font Awesome symbol table.
  */
 
+$fa-user:         "\f007";
 $fa-bars:         "\f0c9";
 $fa-extlink:      "\f08e";
 $fa-up:           "\f0d8";