add empty pages for evenness

pdf-compile.py

@@ -135,7 +135,12 @@ for chapter in chapters:
 	outputs.append(localhost+pdffile)
 
 	counter+=1
-	page=page+pypdftk.get_num_pages(localhost+pdffile)
+	pagenr=pypdftk.get_num_pages(localhost+pdffile)
+	if (pagenr % 2) != 0:
+		pypdftk.concat([localhost+pdffile,localhost+'blank.pdf'],localhost+'temp.pdf')
+		os.replace(localhost+'temp.pdf',localhost+pdffile)
+		pagenr+=1
+	page=page+pagenr
 	
 # compiling all the files in one big pdf!