Reaffirm string-based generation.

In recent commits, HackMyResume generation logic, much like the pilots
in Top Gun who became too reliant on air-to-air missiles and lost the
true art of dogfighting, has become dependent on file-based generation
as implicit file assumptions have crept in. This commit reaffirms the
file-less, string-based nature of the generation process and, as a side
effect, adjusts the behavior of (binary) PDF generation to match.

src/eng/generic-helpers.js

@@ -161,7 +161,7 @@ Generic template helper definitions for FluentCV.
     }
     else {
       idx = Math.min( lvl / 2, 4 );
-      idx = Math.max( 0, intVal );
+      idx = Math.max( 0, idx );
     }
     return idx;
   }