Break out user-controlled global configuration variables into separate config.js. Upgrade to Mapbox.js 1.6. Clean up old and unused attribution code. Remove trailing whitespaces in min.'s
Revert "Break out user-controlled global configuration variables into separate config.js. Upgrade to Mapbox.js 1.6. Clean up old and unused attribution code. Remove trailing whitespaces in min.'s"

This reverts commit f423d83e17672898378970c294e2b017c7aa7b79.
Revert "Revert "Break out user-controlled global configuration variables into separate config.js. Upgrade to Mapbox.js 1.6. Clean up old and unused attribution code. Remove trailing whitespaces in min.'s""

This reverts commit 7044dbbce7b7a602f217c590e7eb5ba6113f211a.