Idle feeds: link to configuration page

https://github.com/marienfressinaud/FreshRSS/issues/544
Idle feeds: show tooltip with last update date

https://github.com/marienfressinaud/FreshRSS/issues/544
Stats idle feed small bug

Some feeds were listed more than once. A bit more independent from the
SQL query.
https://github.com/marienfressinaud/FreshRSS/issues/544
Fix bugs in import/export

- EntryDAO.php: add a missing "FreshRSS_EntryDAO::"
- Fix htmlspecialchars in opml export
Add article repartition in stats

Add article repartition per hour, per day of week, per month for all feeds but also for individual feeds.
Add repartition statistic support in Sqlite
Stats idle: hide empty periods

https://github.com/marienfressinaud/FreshRSS/commit/e507256d0bdebd02cf1fcd6fe1477cbac0b6934e#commitcomment-7119169
Small fixes to follow @marienfressinaud recommandations
Correct bug in add/remove users
Hide read feeds and read categories when in unread mode

https://github.com/marienfressinaud/FreshRSS/issues/430
There are some repeated HTML attributes (`data-unread` and `active`)
which could maybe be simplified.
If some people do not like this behaviour, we could consider having an
option.
Merge pull request #550 from plopoyop/dev

Correct bug in add/remove users
Small fixes to follow @marienfressinaud recommandations (take 2)
Remove unnecessary title property
Merge pull request #548 from aledeg/more-stats

Add article repartition in stats
Fix bug collapse and mark_read

Articles was not marked as read when open with shortcuts.collapse_entry

Fix https://github.com/marienfressinaud/FreshRSS/issues/556
Merge branch 'dev' of github.com:marienfressinaud/freshrss into dev
Basic protection against XSRF using Referer

https://github.com/marienfressinaud/FreshRSS/issues/554
Also edited the error controler to use the log message passed in
Minz_Error::error().
Changelog towards 0.7.4
Install script was not keeping all config settings

https://github.com/marienfressinaud/FreshRSS/issues/537
Strict Referer domain against XSRF

https://github.com/marienfressinaud/FreshRSS/issues/554