Add some extensions

Author: cdujeu

core/src/conf/extensions.conf.php

@@ -47,6 +47,7 @@
     array("ram","video.png", "file-video",  17),
     array("rm","video.png", "file-video",  17),
     array("pl","source_pl.png", "file-xml", 18),
+    array("java","source_pl.png", "file-xml", 18),
     array("zip","zip.png", "archive", 19),
     array("wav","sound.png", "file-music", 20),
     array("php","php.png", "language-php",  21),
@@ -80,6 +81,7 @@
     array("pps","presentation.png", "file-powerpoint", 446),
     array("odp","presentation.png", "file-powerpoint", 446),
     array("sxi","presentation.png", "file-powerpoint", 446),
+    array("key","presentation.png", "file-powerpoint", 446),
     array("pdf","pdf.png", "file-pdf", 79),
     array("mov","video.png", "file-video",  80),
     array("avi","video.png", "file-video",  81),