Merge branch 'pb-hexanode' into development
add --oneline option to hexaswitch listen for terse output
have hexanode frontend autostart in ~hexanode and with correct server ip
add python3 dependency to hexanode, remove cronjob's conffile status
place git revision number in the actual version number of packages
add libhexabus dep to hxb_msg_bridge for the endpoint registry
put the extra version number component into the actual version, too
since libhexabus is always installed to /usr, adjust paths that cmake doesn't know about
[hexinfo] Added json output for device definitions
properly dispose of packet listeners
optimize releases with -Os, don't disable ipa-sra

ipa-sra was disabled mainly because hexanode kept crashing somewhere and
in weird places. as we now know, this was not the compiler's fault.
drop privileges of hexabus node app on request
verify certificates in heartbeat code, add msg CA
update package names and descriptions for hexanode
rename service hexanode to hexanode-webfrontend
autostart hexanode backend and have it post to localhost
export correct server IP to hexanode webfrontend
better exec() the backend to keep process count down and svc semantics intact
set sane default value for hxb_msg_bridge config parameter
correctly open store in hexalog