Cleanup.

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Started working on a new plugin version of hdfeos_l1b.

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>
Added navigation to hrpt_hmf plugin.

Signed-off-by: Martin Raspaud <martin.raspaud@smhi.se>