update examples (s/ranger.fsobject/ranger.container/)
gui.ui: remove curses.setupterm() instruction

it was added in commit b34807bd428bbe7bb40e8798af17f0f4cf5ecf1f
("gui.ui: more portable terminal title support") and I don't know why
anymore.  It seems to work perfectly without it.

Keeping it seems to cause broken terminals on some systems though.

see also:
http://bugs.python.org/issue7567
http://lists.nongnu.org/archive/html/ranger-users/2013-03/msg00046.html