Blender Git Loki

2.5

Small fixes for filewindow;
- on resize area/window, the load button disappeared.
- made scrollers indicate what direction works
- mousewheel scroll switches to horizontal automatically now

(assuming we keep filelists horiz, previews vertical scrolled)

View2d got hacked a bit by me for it; i guess for some cases
the scroll value should become customizable. Will come back
later!