[Journal] Updated Wiki

[Sunburned Surveyor]

I have updated the wiki for Volume 8:
http://wiki.osgeo.org/wiki/Journal_Volume_8

I have also added a link to the wiki page for each volume of the
journal to the main journal wiki page:
http://wiki.osgeo.org/wiki/Journal#Journal_Volumes

I'll see if I can get the SVN folder for Volume 8 set-up and articles
for review sent to Raf and Eli this weekend.

Landon