Disabled dummy tests and fixed bugs regarding to plugin name retrieval

Disabled test which rely on DummyTransferSettings since it does not
support generic nested transfer settings.

Fixed a bug concerning the plugin name retrieval in combination with
plugin names which are camelcased while the package name is underscore
based.
Change share link

Changed share link to combine identifier and settings in one encryption
string. Generates shorter links and is probably more secure.
Fix Java 8 compile error, relates to #240