Make Step2.xml more welcoming English

The first run screen is vital for making new users feel comfortable and unthreatened, so they'll continue, finish the install and keep actually using arkOS / Genesis. Accordingly I've updated firstrun step 2 messages to be more friendly and accessible to low tech users. Phrases like Unix and SSH can be introduced later, such as in a message telling users that have just set up SSH that they can use their standard username / password to log in.