#13 add batch to convert and delete old files

.gitignore

core/Controllers/DocserverController.php

core/Controllers/StoreController.php

core/Models/DatabasePDO.php

modules/convert/Controllers/ProcessConvertController.php

modules/convert/Controllers/ProcessFulltextController.php

...es/convert/Controllers/ProcessManageConvertController.php

modules/convert/Controllers/ProcessThumbnailsController.php

modules/convert/Test/ProcessConvertTest.php

modules/convert/Test/ProcessManageConvertTest.php

modules/convert/Test/Samples/test.html

modules/convert/Test/Samples/test.odt

modules/convert/Test/Samples/test.pdf

modules/convert/Test/Samples/test.txt

modules/convert/batch/LoggerLog4php.php

modules/convert/batch/batch_tools.php

modules/convert/batch/config/config.xml

modules/convert/batch/fill_stack.php

modules/convert/batch/load_fill_stack.php

modules/convert/batch/process_stack.php