Move all the code to the upstream, official Hyde

Update README to remove the wierd install and add new instructions
Ignore .hyde_deps, remove .gitsubmodules
Remove all references to Django
Update requirements.txt
Add new YAML config files
Replace {% hyde %} tags by "---"
Update spaces listing for the new hyde
Use a template spaces.html
Merge pull request #12 from UrLab/upstream-hyde

Move all the code to the upstream, official Hyde