* Some of our chapters are pretty long and this should make it much
easier for a user to find what they're looking for and jumping
to it. It's easier to read the section toc at the top of the
chapter, than it is to read it in the sidebar.
* lots of changes to the contributing howto from Matt, Greg, Will, and
Chris
* adds references between the contributing howto and other chapters
* adds a design decision regarding copyright assignment
* changes COPYING to explain licensing for all of GNU MediaGoblin
* adds design decision regarding why we picked the licensing we did
* adds CC0 and AGPLv3 texts
* removes licensing bits from hacking howto--we should put that somewhere
else
* fixes some typos
* tweaks some language issues that occured because I took Chris'
stuff out of the context of the original READMEish structure
* ditches installation for deploymenthowto and hackinghowto
use, what their function is, and urls for library documentation
* adds a forward chapter which talks about the documentation
* adds an installation stub
* adds a software stack chapter that covers what libraries are in
* adds a design decisions chapter which covers why we chose the
libraries and architecture
