fixed export database to h5
added pid/process check to daemon start functions
fixed loading of initial diagram data in hmi
added daemon mode and pid file to gunicorn startup script
fixed exception in modbus data request wenn client is not excess able,  fixed timestamp queries from RecordedDataCache in cache view, fixed logout view
changed modbus client, database change is needed, some enhancements in hmi
fixed mod bus client write
Merge branch 'master' into Event_feature

Conflicts:
	pyscada/modbus/client.py