Revert "BugFix: *LookupService are now traits[...]"

This reverts commit 8ed4740554f765f10ccf326ec4ed9874581a321a.
Refactor: add abstract class "MediaLookupServiceProvider" (stub)
Refactor:Reorganize code packages
BugFix: corrected refactored imports
Add local Maven repository to SBT resolvers
Delete duplicated FlickrAuthTest
Formatting