CIRCNetwork: add support for join delay (resolves #586)
controlpanel: get/setnetwork joindelay
webadmin: let specify join delay for networks
Merge pull request #704 from jpnurmi/joindelay

Configurable join delay
Introduce patch level version number for bug fix releases

The patch level version number is ignored in module and config
version compatibility checks. Radically simplified, bug fix
releases shall not touch the headers nor change the config file.