Replaces ServerException with ProviderException

Deletes ServerException
Refactors all affected classes to use ProviderException

Change-Id: I2e7948e3b90964a1a6883066cbcb7c883c4d8140
Signed-off-by: Maximilian Conradi <maximilian.conradi@iese.fraunhofer.de>
25 files changed