Move stem site to torproject.org

Stem's present homepage is on readthedocs...

https://stem.readthedocs.org/en/latest/index.html

... and, while it's a fantastic service, in the long run it would be nice for us to be on the torproject domain. This is for a couple reasons...

1. Shorter, more memorable url that's clearly related to tor.
2. Control over the user request logging (or lack thereof).

Moving over shouldn't be conceptually difficult, but will take a little work...

1. We need to register 'stem.torproject.org' (Andrew would know how).

2. Make a build script that can publish new content. If you had the following environment variables then it might be something like...

• $STEM_PATH is the location of a copy of stem
• $BUILD_ROOT is where we place stem's website builds
• $WEB_ROOT is apache's root for our site
• $BUILD_TIME unix timestamp of the latest build

cd $STEM_PATH/docs
git fetch
export OLD_BUILD_TIME=$BUILD_TIME
export BUILD_TIME=`date +%s`
make html
mv _build/html $BUILD_ROOT/build_$BUILD_TIME
ln -s $BUILD_ROOT/build_$BUILD_TIME $WEB_ROOT
rm -rf $BUILD_ROOT/build_$OLD_BUILD_TIME

3. Run this build script as a daily cron and provide some method to be manually ran (maybe by curling a url).