Merge pull request #3736 from ivanov/fix-3735

Don't strip pdf extension from figure filenames

It seems to have been an erroneous assumption that this was necessary.

closes  #3735

IPython/nbconvert/templates/latex/base.tplx

@@ -62,7 +62,7 b' it introduces a new line'
 
 ((*- block data_pdf -*))
 \begin{center}
-\includegraphics[width=0.7\textwidth]{(((output.pdf_filename[:-4])))}
+\includegraphics[width=0.7\textwidth]{(((output.pdf_filename)))}
 \par
 \end{center}
 ((*- endblock -*))

IPython/nbconvert/templates/latex/sphinx_base.tplx

@@ -359,7 +359,7 b' Note: For best display, use latex syntax highlighting. =))'
 ((*- endblock -*))
 
 ((*- block data_pdf -*))
-    ((( conditionally_center_output(insert_graphics(output.pdf_filename[:-4])) )))
+    ((( conditionally_center_output(insert_graphics(output.pdf_filename)) )))
 ((*- endblock -*))
 
 ((*- block data_latex *))