Merge remote-tracking branch 'upstream/devel' into devel
German documentation improvements
Merge pull request #60 from Fusl/devel

German Corrections
Merge pull request #61 from AsydSolutions/devel

German documentation improvements
Mutex so the DB doesn't crash when assigning opt_vars
more interlocks when modifying hosts db
Email now accepts self-signed SSL and show errors
Merge pull request #63 from Mephiston/devel

Email now accepts self-signed SSL and show errors
typo fix