The redirect to the unread page after a manual refresh only, if new
items could be fetched and we where redirected to the subscriptions
page because of a former nothing_to_read.
Update the unread counter after refreshing either one feed or all feeds.
Redirect to unread if nothing_to_read is set, but unread items exists.
This could be the situation with the remember me function, when new items
are fetched while the browser was closed.
Show feeds with errors always at the top and highlight them
Changes the feed order to:
1. failed
2. enabled
3. disabled
Order alphabetical within each group.
Show a warning message with a hin to the console if feeds have issues
Fixes#300, #303
Inserts a (unread/total)" items count in front of each subcription
on the feeds page.
models/feed.php adds two functions: get_feed_unread_counts(), get_all_w_counts().
get_feed_unread_counts - returns either an array of (unread/total) counts indexed
by feed id or a singl (unread/total) for a specific id.
get_all_w_counts() returns the same as get_all() but appends items_unread and
items_total columns.
controller/feed.php modifies Router\post_action('refresh-feed',function() to
retrun the (unread/total) count in the retruned ajax json array.
Router\get_action('feeds',function() was modified to call get_all_w_counts().
templates/feeds.php was modified to insert the (unread/total) count into the
span id="loading-feed-" such that is can be updated after a refresh.
assets/js/feed.js was modified to to have the Update and hideRefreshIcon
update the returned (unread/total) amounts in the "loading-feed" span.
