Add NO_INTERNET_MODE env variable, styles for no-internet mode, and backup copy of Lato font
Remove comment
Add NO_INTERNET_MODE env var to readme
Merge pull request #467 from codeforamerica/no-internet-mode

Setup and styles for running a local copy of Streetmix for public use.
Bump Express to ~4.9.8

Conflicts:
	package.json
add npm-debug.log to .gitignore