#2 localization and documentation

[Vladimir Lukianov]

1. As I dont speak german I found no where except
source codes info about default admin login
'admin' => 'password'
Add this to you Installationshandbuch_Proxy.pdf please.

2. There are some localization problems - not all
strings translated.

Seems will be good to add Lang preference to ratmaster.
jnlp and especially to rathost.jnlp.

3. If you wish I can fill RAT_ru_RU.properties.