added new support for note files and tweaks for better footnotes

slides_template/Makefile

@@ -4,8 +4,6 @@ all: $(patsubst %.tex,%.pdf,$(wildcard *.tex))
 pdf: all
 
 %.pdf: %.tex
-	#perl -p -e 's/©//' refs.bib > refs-cleaned.bib
-	#recode -d u8..ltex < refs-cleaned.bib > refs-processed.bib
 	mogrify -format pdf figures/logo.svg
 	rubber -fd $<
 	extract-notes $<
@@ -14,8 +12,6 @@ clean:
 	rubber -d --clean *.tex
 	rm -f *.tmp
 	rm -f vc
-	#rm -f refs-cleaned.bib
-	#rm -f refs-processed.bib
 	rm -f figures/logo.pdf
 	rm -f *.pdfpc