Fix terminal session restore.
Added light solarized colorscheme.

This colorscheme is based on Ethan Schoonover's, who is the original author of
solarized, xresources file.
Fixed wrong foreground color in solarized dark.

"[...] in the case of a dark background colorscheme, the normal relationship
for background and body text is base03:base0 (please note that body text is
*not* base00)." [1] Since base0 is equal to #839496 in the dark version of
solarized, the foreground color is wrong.

[1] http://ethanschoonover.com/solarized
I18n: Update translation nl (100%).

282 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).
I18n: Update translation bg (100%).

282 translated messages.

Transifex (https://www.transifex.com/projects/p/xfce/).