Minor Usability Update

After a few reports, I decided to make a few changes to help people get through this (very short) game. In particular, I've made some extra signposting and hints towards getting a level 1 access code. I changed some text on welcome.HELP to give you a better idea of what you're supposed to be looking for (a word puzzle/riddle). I also noticed that people were frustrated by the extra functionality of group folders that let you access the first two files/programs from outside of the group itself. Now clicking on any part of the group will just open the group. This was preventing people from finding the .HELP files at all, and made them think that the entire system was just inaccessible.