Use properties having been added to DLNAMediaInfo in PMS (#75)
 - Add property FileImportVersion to DOFileInfo
 - Add field FILEIMPORTVERSION to DB (including update script) with default value 0
 - Persist and restore FileImportVersion
 - Update h2 DB version from 1.3.173 to 1.4.182
Use properties having been added to DLNAMediaInfo in PMS (#75)
 - Added mechanism to rescan file properties (properties which are not editable by the user)
 - Reworked entire scanning mechanism
 - Added DB method to retrieve files for which file properties have to be updated
 - Updated DB queries
 - Added copyFrom functionality to DOXXXFileInfo in order to apply the updated values to the existing objects
 - Added dialog asking if files requiring an update should be rescanned (when the server is ready)
 - Created new constants class VersionConstants holding the DB as well as file import versions
 - Extracted method 'public static FileType getFileType(String fileName)' to FileImportHelper
 - Refactoring