* Problem: Source files contain no license info
Solution: Add comments with SPDX license info to source files
* Python 3 files don't need # -*- coding: utf-8 -*-
- Template doc for BigchainDB + Tendermint single node
- Template doc for BigchainDB + Tendermint network
- Remove autosectionlabel extension from docs/server/source/conf.py
- Removed this extension because this does not allow two different
documents to have same headings, because it auto-indexes
- Fix and explicitly label headings and references.