Initial Python 3(.3) support (#26).

u"" still causes syntax error.
Merge commit 'a73811f050a0582d299b002ba29631573abb4724' into python3

Conflicts:
	body.py
	i18n/locator.py
	randomwrapper.py
	randorator.py
	rsd.py
	tk_randorator.py
UI became set correctly.
Fixed SyntaxError raised by Python 3 only:

"from __future__ imports must occur at the beginning of the file."