Description of problem:
libreoffice: unavailable quickstarter

Version-Release number of selected component (if applicable):
LibreOffice Version: 5.2.7.2
ID: 5.2.7.2-3.fc25

How reproducible:


Steps to Reproduce:
1. Install libreoffice (sudo dnf install libreoffice-writer) on Fedora 20 or later (in my case FC25_x64)
2. Start libreoffice (libreoffice --writer)
3. Try to enable QuickStarter (Tools > Options > Memory) 

Actual results:
QuickStarter no longer available in system tray. No such option avaible
Without quickstarter LibreOffice opens files very slowly.
With all enabled tweaks -preload, JavaDisabled, 64Gb of memory - 2 seconds.


Expected results:
QuickStarter should be available in system tray:
https://ask.libreoffice.org/upfiles/14915774457829115.png
With quickstarter LibreOffice opens files instantly.

Additional info:
1. This option is avaible in official docs:
https://help.libreoffice.org/index.php?title=Common/Memory&Version=5.2

2. In Gentoo this was error and was fixed (compilation option)
https://bugs.gentoo.org/show_bug.cgi?id=561842

3. RedHat Support  (Caolan McNamara https://bugzilla.redhat.com/show_bug.cgi?id=1462100):

The systray thing is gtk2 only while we've moved on to gtk3 by default. The full systray set of gtk apis (https://developer.gnome.org/gtk3/stable/GtkStatusIcon.html) fot the systray have been deprecated and the systray concept is deprecated since GNOME3 (https://wiki.gnome.org/Design/OS/MessageTray/Compatibility) so its not practical to reimplement the systray for gtk3. Retaining it for gtk2 only doesn't gain us much.

3. The cost of the lack of options per employee:
   2 seconds * 50 times * 22 working days = 36 minutes
   0.6 hours * 3$ per hour * 12 months = $ 21 per year