Cleaner logging
Makes the "ot" and "n" parameters work correctly together.
Get articles' ids for syncing read/starred status.

Now that we only get recent articles when we fetch them, we need to get id's of starred and unread articles in order to update their statuses into Vienna's database.
Avoid duplicates when moving a feed to a folder.

When one assigns a label to a feed, Bazqux does not automatically remove the previous label.
Limit keychain requests after machine sleep.

We assume ClientLogin auth tokens are still valid after a wakeup. In most implementations, they are valid for a few days.
Fix duplicate or incoherent Keychain items.
Workaround until FeedHQ manages both "ot" and "n"

FeedHQ fetches too many items when one passes both "ot" and "n" parameters in our request : https://feedhq.org/reader/api/0/stream/contents/feed/[[ESCAPED_FEED_URL]]?client=ViennaRSS&comments=false&likes=false&ot=[[TIMESTAMP]]&n=500&ck=[[LAST_FETCH_TIMESTAMP]]

So, we limit ourselves to 100 ; but we might miss some articles this way…
Merge pull request #207 from barijaona/openreader

Better and faster Open Reader sync