Generate pdf files twice to ensure table of contents is populated

Makefile

@@ -149,10 +149,12 @@ latex: fetchtranslations
 	      "(use \`make latexpdf' here to do that automatically)."
 
 
+# build the pdf twice to ensure the table of contents is generated
 latexpdf: latex
 	@$(foreach TRANSLATION,$(TRANSLATIONS), \
         echo "Translation [$(TRANSLATION)]..."; \
 	    sed -i s/,dvipdfmx// $(BUILDDIR)/latex/$(TRANSLATION)/$(MAHARA)/Mahara.tex; \
+	    $(MAKE) PDFLATEX="xelatex -halt-on-error -file-line-error" -C $(BUILDDIR)/latex/$(TRANSLATION)/$(MAHARA) all-pdf|grep -P -A2 ":[0-9]+:\ .*|Error:"; \
 	    $(MAKE) PDFLATEX="xelatex -halt-on-error -file-line-error" -C $(BUILDDIR)/latex/$(TRANSLATION)/$(MAHARA) all-pdf|grep -P -A2 ":[0-9]+:\ .*|Error:"; \
 		echo "---------------"; \
 	)