Adding a ClaimMainager

This class will maintain the database of claimed items.
Adding a Controller

This one will manage all actions by the user. At first, these are claims
for items.
Adding check for whether item is claimed
Adding claiming feature

First implementation requires a page reload. Next coming is AJAX.
Correcting function call
Moving the ID to the ARTICLE item

Seems more natural to identify the article here, rather than the list
item, which is just a container.
Adding claiming items via AJAX
Adding spaces for readability
Moving all action triggers to the init function
More spacing for readability
Adding sample content to the config file
Correcting spelling
Adding comments to the config file