Now reads CSV, also other changes.

-The script now changes target directories with the use of
Directories.csv. Have a look at the code for more info.
-Added a line linking to the project's github page.
-Shortened line about the author.
-java_dir and db_scr_dir were obsoleted and thus removed.
-Various functions now have defaulted/optional arguments.
-end_script() now writes a newline before its text.
-Various obsolete comments were removed.
-Checking of whether fraps and DB lists are empty works now.