implemented feature  pre and postHooks as standard custom props #2
without adaption of description workflow
fixed 

importCorpusStructure with wrong document names #22
added logback-test file to ignore list
jenkins build
* added failure tolerancy in ModuleResolver, when a bundle was removed
* added clean and debug command in PepperStarter to clean the OSGi
workspace and switch on a debug mode to dispaly error msgs
updated pom version
updated Pepper to java 1.7
???
* now all temporary folders have a naming extension with the users name
or a randomized sequence of characters to avoid conflicts on a multiuser
system and their write permissions
* added default, that all intermediate Salt doccuments are deleted when
Pepper terminates
* added a flag in configuration 'keepSaltDocuments' to change default
behaviour and to keep the intermediate files
prefixed debug messages with either the name of the module or [PEPPER]
added call of before() and after() to start() in PepperModuleImpl
started implementing reading of new workflow description file
removed old log4j files
tests for new workflow description are running now. It remains to
combine old and new description files
added WorkflowDescriptionReader as default workflow descriptin file
reader and added a delegation in WorkflowDescriptionReader to delegate
to old PepperParamsReader
implemented storing of PepperJOb to file
forgotten to add test template file in last commit
fixed a bug in property add layer before processing
moved PepperModuleImpl.before() and PepperModuleImpl.after() to
PepperMapperController, since in PepperModuleImpl, it was not threaded.