v0.6.4

• fixes for latest googleplay-api version compatibility
• updated js/css libraries
• automatically close navigation menu after selecting an option (mobile layout)
• added authentication with gsfid and auth token in credentials.conf file
• added a button in the login page to notify when a security check is needed
• Dockerfile: start daemon as unpriviliged user (may require manual intervention)
• added environment variable to specify a device to be used by googleplay-api