add more test for revocation mechanism

fix some english grammatical issues

remove unnecessary invokation of validateAccessToken

rename "then" description
Merge pull request #175 from sschum/osng-444

add more test for revocation mechanism
Merge pull request #178 from osiam/develop

Merge Develop in Master
configure plugin for self-administration
use correct plugin-jar
only filter specific properties files
add groovy tests for user validation via plugin
add tests for plugin-mechanismus
Remove unused query "abc"
Add a new line to the end of the file