NG: use nodejs as backedn instead of grails
added tags and tagSummary API. REST API implementation complete.
completedt tags api, corrected bbox parsing
initial jts api support
private tags api support
private tag browsing: allow the user to see only her own tags or everyone's tags
remove the status code from the session expired message
support for updating production db via liquibase on service restart
supply host parameter to jdbc url connection string
specify PROD context when running liquibase updates on PROD
tweaks to load admin user in prod and fix so that tests run successfully the first time after db creation (sequence clash)
complete configuration of demo user account
cleaned ide files, updated gitignore