Merge branch 'nuest-master'

Conflicts:
	README.md
Updated license workflow to use github CDN for license mappings
add new developer
fixing minor bugs in HTML code: &deg --> &deg;
Exclude properties files from license header workflow
fix problem with 52north sos implementation: optional kvp parameter 'serviceVersion' is not supported but 'AcceptVersions'
set sourceEncoding to UTF-8
Remove leading 'I' from interfaces
switch to SNAPSHOT versions and increase to 0.3

We don't want to have bug fix versions x.y.z while still being a development version (0.x)
Minor attribute refactoring c -> check
Fixes 52North/Supervisor#33
Set contenttype and encoding correctly
fix bug with String equals vs. !=
Implement SPS GetCapabilities checker; fixes 52North/Supervisor/issues#34
remove not used and deprecated type
add developer connection
fixes 52North/Supervisor#35

Implement properties loading from user.home;
Merge pull request #37 from EHJ-52n/master

Merge with latest developments from EHJ-52n