comment out non-working lilypond instruments from the default template for now

engine/resources/lilypondTemplates/default.ly

@@ -14,17 +14,17 @@
     %Print small title on every page.
     oddHeaderMarkup = \markup
     \fill-line {
-    \on-the-fly #not-first-page \fromproperty #'header:title
-    \on-the-fly #not-first-page \fromproperty #'header:instrument
+    %\on-the-fly #not-first-page \fromproperty #'header:title
+    %\on-the-fly #not-first-page \fromproperty #'header:instrument
     %"" % This will make sure that the header is never completely empty, to
     % avoid some layout problems. Also, moving it in between the title and
     % the page number, makes these be typeset left and right aligned, respectively.
-    \on-the-fly #not-first-page  \on-the-fly #print-page-number-check-first \fromproperty #'page:page-number-string
+    %\on-the-fly #not-first-page  \on-the-fly #print-page-number-check-first \fromproperty #'page:page-number-string
     }
 
     evenHeaderMarkup = \markup
     \fill-line {
-    \on-the-fly #print-page-number-check-first \fromproperty #'page:page-number-string
+    %\on-the-fly #print-page-number-check-first \fromproperty #'page:page-number-string
     \fromproperty #'header:instrument
     \fromproperty #'header:title
     }