updated wizard, heartbeat and fsync to reflect changes in the api
[openwrt] added heartbeat_handler to trigger heartbeats when pressing the reset button for 2-5 seconds
[cmake] we do not depend on a specific openwrt revision anymore so we might want to run svn up from time to time
updated openwrt .config
implemented client side of new api 2.1
[openwrt] updated network configuration to fix ipv6 setup
[openwrt][hexadaemon] fixed init script to ignore dynamic addresses
[openwrt][libhexabus] install endpoint_registry
 [openwrt] added /etc/cron.d for simplifying the creation and deletion…

 … of daemon-specific cron jobs
[openwrt] update feeds when building
[openwrt][hexadaemon] hexadaemon now supports multiple addresses and interfaces

Modified the hexadaemon init script to use these new features
[openwrt][heartbeat] implemented some more features of the new api