move mate-image-viewer and mate-sensors-applet into /extra; update mate-build-extra.sh and testing/mate-build-testing.sh accordingly

mate-build-extra.sh

@@ -43,9 +43,11 @@ for dir in \
   extra/mate-file-archiver \
   extra/mate-file-manager-open-terminal \
   extra/mate-icon-theme-faenza \
+  extra/mate-image-viewer \
   extra/mate-media \
   extra/mate-menu-editor \
   extra/mate-power-manager \
+  extra/mate-sensors=applet \
   extra/mate-terminal \
     ; do
   package=$(echo $dir | cut -f2- -d /)

testing/mate-build-testing.sh

@@ -32,10 +32,8 @@ INST=1
 TMP=${TMP:-/tmp}
 
 for package in \
-  mate-image-viewer \
   mate-netspeed \
   mate-screensaver \
-  mate-sensors-applet \
   mate-system-monitor \
   mate-text-editor \
   mate-utils \