[BZ#1020846] Fixing NPE problem, Using service name as truststore alias
for the certificate retrieval.
Correct a wrongly spelled variablename to the one used in picketlink
Merge pull request #231 from ertaiNL/master

Correct documentation of SupportSignatures
Merge pull request #209 from pskopek/BZ_1020846

[BZ#1020846] Fixing NPE problem, Using service name as truststore alias for the certificate retrieval.