LaTeX template: include natbib/biblatex after polyglossia.

Otherwise we seem to get an error; biblatex wants polyglossia
language to be defined.

Closes #4073.

data/templates/default.latex

@@ -154,16 +154,6 @@ $endif$
 $if(beamer)$
 \newif\ifbibliography
 $endif$
-$if(natbib)$
-\usepackage[$natbiboptions$]{natbib}
-\bibliographystyle{$if(biblio-style)$$biblio-style$$else$plainnat$endif$}
-$endif$
-$if(biblatex)$
-\usepackage[$if(biblio-style)$style=$biblio-style$,$endif$$for(biblatexoptions)$$biblatexoptions$$sep$,$endfor$]{biblatex}
-$for(bibliography)$
-\addbibresource{$bibliography$}
-$endfor$
-$endif$
 $if(listings)$
 \usepackage{listings}
 \newcommand{\passthrough}[1]{#1}
@@ -296,6 +286,16 @@ $if(dir)$
   \newenvironment{LTR}{\beginL}{\endL}
 \fi
 $endif$
+$if(natbib)$
+\usepackage[$natbiboptions$]{natbib}
+\bibliographystyle{$if(biblio-style)$$biblio-style$$else$plainnat$endif$}
+$endif$
+$if(biblatex)$
+\usepackage[$if(biblio-style)$style=$biblio-style$,$endif$$for(biblatexoptions)$$biblatexoptions$$sep$,$endfor$]{biblatex}
+$for(bibliography)$
+\addbibresource{$bibliography$}
+$endfor$
+$endif$
 
 $if(title)$
 \title{$title$$if(thanks)$\thanks{$thanks$}$endif$}