Renames WoF API docs to Mapzen Places

[rmglennon]

These changes basically renames the Who's on First API to Mapzen Places.

Summary:

• updates docs build process to pull from mapzen branch source files, rather than master
• renames banner and tagline
• renames any examples of wof to be places in build process
• deletes the wof config file and replaces it with places
• updates automated tests to refer to places
• adds URL redirects for any existing topic with a /wof. If you go to documentation/wof, for example, it will redirect to documentation/places

Note: this PR updates the documentation build process. Any content changes to be done in source files.

cc @thisisaaronland @dphiffer @mjcunningham @kkowalsky

[mjcunningham]

👍 looks good to me

[rmglennon]

See also https://github.com/whosonfirst/whosonfirst-www-api/issues/85 for content changes