start to configure for Docker
make the 'dist' step non-required, fix NLTK install
update comments on Dockerfile
add a Dockerfile for running the API
update Docker scripts; use Unicode in API
rearrange a bunch of web stuff so we can serve it in one process
fix a Wiktionary bug

(cherry-picked from docker-full branch)

Conflicts:
	Dockerfile
Don't include "build_cc_by" in "make all"

The prereqs don't work out.
use a slightly different Makefile to ensure that partial builds work
add the slightly modified Makefile
API and Web interface can be deployed through Docker
update dependency version numbers to 5.3
Merge remote-tracking branch 'origin/docker' into version5.3
the link should point to 5.3
Merge branch 'docker' into version5.3
update the compiled wiktionary parsers
Merge branch 'version5.3' of github.com:commonsense/conceptnet5 into version5.3
add files for running a legacy 5.2 API
Merge branch 'version5.3' of github.com:commonsense/conceptnet5 into version5.3
fix unintended effects of neighbor_weight, plus slow queries