read configurable request parameter from database
changed type of additional request params to array to allow simple  configuration with spring
organized imports
added parameter for additional request parameters replaced from configuration
Added the kvp-values to the WcsPermission
Added the kvp-values to the AuthorizationReport
Added tests for kvp-values in the WcsPermission and the AuthorizationReport
Retrieve additionalKeyValuePairs in SecurityFilter
Implemented KvpRequestWrapper to add new kvps to a request and integrated the wrapper into the deegree-securityproxy
Added javadoc to ServiceManager
Added tests for KvpRequestWrapper
added test to fix
use assertThat instead of assertTrue
added/fixed tests
organized imports
Merge pull request #24 from lat-lon/feature/configurableParameters-193

Feature/configurable parameters 193