knx: fix exception handling
base: adding reload_logics to interactive mode and commandline option
adding my system.py and system.conf to the examples directory
adding history to interactive mode
SQLite: free memory, improve error handling, check integrity
SQLite: acitvate Write-Ahead Logging
add object references output
ical: adding part two of Max fix. THX
SQLite: enable sum only with sqlite = sum
Merge remote-tracking branch 'upstream/develop' into calendar

Conflicts:
	plugins/ical/__init__.py