RSS parsing has been added as a method to parse source since they're
easier on the website's end to parse.
Source settings have been added. The only current setting is the fetch
mode which selects which parser/scraper to use. By default, if an RSS
parser is found, it's selected.
A source now has info shown regarding versioning and authorship. A source
list's repository name and author string are now required.
Signed-off-by: kingbri <bdashore3@gmail.com>
