Symbolic icons in app menu -- not ready for F22

[Michael Catanzaro <mcatanzaro gnome org>]

Hi,

Currently, half our apps use nice symbolic icons in the app menu, 
while the other half use shrunken hicolor icons. This inconsistency is 
a poor user experience, and not something that should happen in a 
serious operating system. Progress is being tracked at [1] under the 
column 3.16 status, but it's clearly not going to be finished prior to 
the F22.

I don't think this change is ready for Fedora (or other distros -- the 
change should have been delayed until GNOME 3.18). We should wait 
until at least all the apps we install by default have symbolic icons 
before making this switch. Ideally [1] would be completed as well. I 
propose either:

a) Reverting the change to use symbolic icons for the app menu in a 
downstream patch. This would involve reverting upstream commit [2].

b) Integrating symbolic icons for those apps in downstream patches. 
This would be more work, but at least patches already exist (thanks 
Jakub!) for nearly all GNOME apps, even though a few have been 
rejected upstream. We would still need icons for devassistant and 
setroubleshoot, though.

[1] https://wiki.gnome.org/Initiatives/GnomeGoals/HighContrastAppIcons
[2] 
https://git.gnome.org/browse/gnome-shell/commit/?id=a0df7aa2b800a2f4a71bcf208e9480d7f21500e0