Changed dump functionality to be written in Python.

Now, the 'sp dump' command requires a filename as the second argument: 'sp dump <type> <filename>'.  The filename is the path relative to the server's ../logs/source-python/ directory to save the file as.
Removed the _dump module and references to the _dump module from the CMakeLists.txt file.
Updated dump_string_tables.  Thanks to @invincibleqc for the implementation.
Merge branch 'dumps_changes'