license, assemblies and SMTP server module

- ADD: started implemention of first daemon module (SMTP server)
- CHG: updated license of "MarcelJoachimKloubert.MyDaemon" project to
GPL v3
- FIX: license headers
- UPD: assembly info files
IDs

- ADD: types to identify objects via a GUID
- ADD: ITMDaemonModule is identifiable now
- ADD: ID for SMTP daemon module
cleanings & improvements

- CHG: clean code & improvements
modules, MEF and fixes

- ADD: modules are initializable now
- FIX: minor fixes
- ADD: helper class for composition instance via MEF