Can be used, for example, to copy everything under algoritmiada-2009/ to algoritmiada-2010/.

- Script was based on existing "recursive-move".
- textblock_copy_replace was modified to use textblock_copy which also supports copying attachments, instead of textblock_add_revision.
- textblock_copy was changed to receive an existing textblock object to copy, instead of the name of the one to copy. This allows modifying parts of the textblock before copying.