Update logrotate file to enable date suffixed rotated logs

Ref: RXTX-17
Create cache settings for webengine

Initially needed for issue RXTX-62
Release version 0.15.3

        [Aurélien Dunand]
        * Update logrotate file to enable date suffixed rotated logs
          ref: RXTX-17

        [Marc Fouché]
        * Create cache settings for webengine, ref: RXTX-62
New development version.
Set the 'HttpOnly' security parameter for all cookies, closes: RXTX-185
Enable CSRF protection for all HTML forms, closes: RXTX-184
 Release version 0.15.4

    * Set the 'HttpOnly' security parameter for all cookies, closes: RXTX-185
    * Enable CSRF protection for all HTML forms, closes: RXTX-184