Rockbox

I noticed some redraw prblems using custom statusbar skin.

Target: Gigabeat X
Rockbxo version: r23989-091214

1. Right after exit text_editor plugin, list uses whole screen instead of sbs viewport.
2. If I keep pressing a button, sbs stops to update information.
e.g. if i keep pressing VOL UP buton, value of volume in sbs increases for a short period and then stops to increase.
And i release the button, the value jumps to correct value.
3. Informations are not update in setting menu unless press a button.
e.g. play any song and go to Setting → Sound Settings → Volume. current time in song is not updated.
there may be more screens that sbs is not updated unless press a button.

patch 01, 02 and 03 are fix for 1, 2 and 3 respectively.
also attached theme i used for testing.