Feature directory recursion

[cppcooper]

I've implemented a feature that allows the user

1. List files in sub-directories
2. Match against full paths, and rename full paths.

Tested:

• Recursion (with the depth of 2)
• Matching paths
• Renaming files to new directories.
  • I tested to a parent directory of the selection(ie. activeDir)
  • I did not test renaming to a non-existent directory, or sub-directories.
  • I did not attempt to move files across drives.

I tried to avoid messing up the whitespace, but I'm fairly sure that endeavour did not succeed.
I reverted the german translation as it didn't serve me any useful purpose, so that will need merging.

I would recommend branching the two languages out of a single branch.