add logos

app/templates/base.twig

@@ -94,8 +94,8 @@
             <img src="images/partenaire/xsys_min.png" alt=""></a>
 	    <img src="images/partenaire/progedo_min.png" alt="">
 	    <img src="images/partenaire/rennes_logo_min.png" alt="">
- 	    <img src="images/partenaire/IleEtVilaine_min.jpg" alt=""> 
-            <img src="images/partenaire/Bretagne_min.jpg" alt="">
+ 	    <img src="images/partenaire/IleEtVilaine_min.png" alt=""> 
+            <img src="images/partenaire/Bretagne_min.png" alt="">
  
             <br>
             <a href="http://devlog.cnrs.fr/{{jdev.label | lower}}/sponsors" target="_blank"><img src="images/sponsor/LinuxMag_min.png" alt=""></a>