Apart from trim_commit_description(), everything from FIC_Filters has
been moved to FIC_Markdown.py
Made generate_link_for_bugs() method properly generate the MD text,
while making sure the script works with bugs that are in parenthesis
and simplified the script. Also removed a bug that would made the method
check any word after "bug" keyword.
Removed the need for an argument in filter_strings()
Added filter_commit() method that will be used in the main logic.
Changelog: