Retrieve user's Pocket items

After user has authorized access to pocket account, get all his pocket items and store in database.

[x] Store items in model (remember: associate to user)
[x] Paginate request for items (use API params count and offset)
[x] Create cookie with user's key after request to Pocket is done
[x] If user is on db, redirect directly to users page.
[x] Create handler to show list of bookmarks
[x] Create view (html/css) to see list of bookmarks
[x] Update save_bookmarks function to only add new bookmarks (use API param since)
[x] Redirect user to list of items once process ends

cabe56 / bookmarks