[i18n] Russian translate of passwd and some fixes

[Illya Belov]

Russian translate of passwd.
http://irkpost.ru/horde/passwd/ru_RU.po

Some messages are not translated because
they are printed not through gettext function. This patch fix that.
http://irkpost.ru/horde/passwd/main.inc.patch

http://irkpost.ru/horde/passwd/ru_RU.po PO-file generated with main.inc rev 
1.31 and http://irkpost.ru/horde/passwd/ru_RU.po.new PO-file generated with 
new main.inc

Russian help for passwd http://irkpost.ru/horde/passwd/help.xml