Metalinks Code

Revived segmented FTP development, still needs some bugs worked out of it

Now handles all SHA hash types and MD5

minor tweaks and bugfixes from pychecker

# Version 3.0
# -----------
# - Speed and bandwidth improvements for checking mode
# - Added checking of chunk checksums
# - If chunk checksums are present, downloads are resumed
# - Proxy support (experimental, HTTP should work, FTP and HTTPS not likely)

Added a function for saving metalinks.

Small fix to #!/usr/bin/python.

Made sure that no lines are more than 79 characters long in the source code.

Added documentation for test_metalink.py.

Added #!/usr/bin/python line for easy Linux execution

- Checked login, should now work for admin-admin
- Checked default listing, seems to work.
- Metalink creation is still on the works.
- Basic functionalitty there, the system is working except for the metalinks part