minor tweaks...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
started refining the panel lib/api...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
fixed a couple of bugs in panel event system...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>
minor tweaks...

Signed-off-by: Alex A. Naanou <alex.nanou@gmail.com>