add wiktionary output directories to the .gitignore
WIP: refactor modules in the main package
Refactor 'nodes' into uri.py, with doctests
Refactor language codes
refactor edges.py
Update and document language codes.

Remove Minangkabau, a language I don't think we intend to show in the
web interface. Perhaps the code was intended to be a different language.
Remove the web API client. We can do better.
remove JSON-handling modules that should be obsolete
test language_codes; update configuration
revive a simplified json_writers.py; WIP on verbosity

Also merged 'data/codes' into 'data/info'
Update, clean up, and comment the Verbosity reader
Update, clean up, and comment conceptnet5.builders.combine_assertions
Clean up and comment distribute_edges
update uri.py, add doctest to edges.py
refactor json_to_assoc, fix the file= argument to the print function
use json_stream to simplify JSON reading
update json builders
This __init__ is not necessary
Update conceptnet4 reader and supporting functions
don't put negative-weight edges into Solr