[BUGFIX] Change did not work as intended.
Merge remote-tracking branch 'b13/master'

Conflicts:
	Classes/Service/MigrateService.php
[TASK] Free SQL result sets. May be usefull if we gain a 'migrate
all' type of command
[TASK] Add some generic methods to AbstractService for extension
migrations
[TASK] Code cleanup
[TASK] Set the $this->parent object so other methods may use it to
echo status messages
[TASK] Add table parameter to the generic migration method
[TASK] Make migrate method more generic by adding a fieldname mapping
. Cleanup tt_news migration
[BUGFIX] Apply fieldmapping before checking if a reference already
exists
[TASK] select dam records based on their storageBasePath
[TASK] Add rest documentation
[TASK] Reset output buffer after flushing messages
[BUGFIX] MigrateMetadataService used wrong preset for sys_file table
[FEATURE] Mark missing files as missing in the _missingfile field in
tx__dam
Merge pull request #39 from MaxServ/master

Bugfixes and stability improvements.