improve getProcessSource javadoc
fix improper messages
Merge pull request #57 from martiner/processService

improve javadoc and messages in process api
rename defaultUri to uriPrefix
add and format some javadocs
rename Process to DataloadProcess
add ProcessType enum
rename Processes to DataloadProcesses
Merge pull request #55 from martiner/renameProcess

rename Process to DataloadProcess and add type enum
Merge pull request #62 from martiner/docs

javadocs + defaultUri to uriPrefix rename
Merge pull request #63 from martiner/renameProcesses

rename Processes to DataloadProcesses
fix DataStoreService tests
add test-output to .gitignore
unify constructors of UpdateScript
add asserts to ModelServiceIT
add and improve some javadocs