thorough overhaul of the openbox guide. i started with Nate's latest draft in bug #256693. more or less completely rewrote it, editing as i went. also added sections on other applications. left the ~arch stuff commented out for now, as we aren't supposed to document anything but the stable tree. this may change upon review, arch team stabilization, rainy weather, etc. also added the doc to our index and took it out of draft status. it's official!
Created attachment 196110 [details, diff] openbox.xml.patch
Ready in CVS, thanks José María.