Created reol_category module.
Added categories feeds.
Don't save feeds in the module directory.

Likely we wont have access.
Ensure that feeds are updated when fetching.
Reorganized a bit.
Removed duped code.
Removed commented code.
Consult a variable more for the feed directory path.
Merge pull request #29 from eReolen/feature/category-feeds-reol-82

Feature/category feeds reol 82