Revert "Fix #803 by unquoting all UTF8 escapes"

This reverts commit 443d5b4.
This "fix" breaks everything. Sorry!

Author: glebm

assets/stylesheets/bootstrap/_breadcrumbs.scss

@@ -14,7 +14,7 @@
     display: inline-block;
 
     + li:before {
-      content: #{$breadcrumb-separator}\00a0; // Unicode space added since inline-block means non-collapsing white-space
+      content: "#{$breadcrumb-separator}\00a0"; // Unicode space added since inline-block means non-collapsing white-space
       padding: 0 5px;
       color: $breadcrumb-color;
     }