wip of meta data feature
improved meta data model
removed default filtering for 'password'
added meta data filtering
improved connection handling of sender
* added configuration test
* threw in some minor refacorings
* added some test stubs
* added lifecycle to sender
* some minor renamings
* added ut for MetaDataVO logic
added uts for vos
removed unnecessary test
added releasing and licensing infos
extracted protocoll strings
changed some wording
fixed sonar issues
split ut and it and added code coverage analysis
improved readme
added uts for appender
made port of integration test dynamic
added its for Sender
first draft of converter uts
Merge pull request #1 from codereligion/sgroebler/converter-tests

converter tests