#8 some keys doesn't work

[raik nagel]

I have found some key problems ;-) (at 0.8.0 - pre9)

1. the <home> key doesn't work into the fileview, it
should select the first entry

2. the <insert> (selection) key scrolls not down, if
the end of the viewbox it reached

3. If some files are selected (via <insert>) and
another key (up/down) is pressed, all previous
selection is lost