fix variables

Author: pikock

app/less/pi.variables.less

@@ -72,7 +72,7 @@
 //
 //## Specify custom locations of the include Glyphicons icon font. Useful for those including Bootstrap via Bower.
 
-@icon-font-path:          "../../fonts/";
+@icon-font-path:          "../app/fonts/";
 @icon-font-name:          "glyphicons-halflings-regular";
 @icon-font-svg-id:        "glyphicons_halflingsregular";