This builds on top of #405, addressing the outstanding review feedback. It:
* Moves workflow to our standard Transifex workflow, drops recommendation for
running babel commands by hand
* Configures Transifex
* Moves all of the commands needed to maintain translations into Grunt
* Sets up docs for translation testing
* Covers installation in docs better
* Drops recommendation for installation through submodules
* Drops superfluous translation documentation
* Cleans up some of the code
* Updates a lot of related documentation
* Updates files at Transifex and brings in full translations back to the
translation files in the repository
* Create CODE_OF_CONDUCT.md
* Point to the RTD code of conduct
* Docs: Add intersphinx
* Docs: add link to our code of conduct
* Add missing sphinx link
Fixes#557#523
* Remove old conf file setup
* Split changelog to its ownfile
* Remove changelog from readme
* Update introduction sentence
* Fix wording of intro
* Remove readme table of contents
* Move links to there sections
* Remove config
* Create configuring.rst
* Remove todo
* Remove installing docs from readme
* Create installing.rst
* Remove contributing section from readme
* Create contributing.rst
* Include basic info in readme
The rest gets pointed to our actual docs
* Add new files to toctree
* Fix configuring options title
* Set logo_only to True
Also, remove documentation of theme options. We have actual docs for this.
* Include readme on index page
