disable verbose logging for XServer, fixes #4333

The current options for the XServer produce a huge amount of log messages. The
server produces around 70-80 messages per minute. The most messages look like
this:

display-manager-start[1846]: GetModeLine - scrn: 0 clock: 75200
display-manager-start[1846]: GetModeLine - hdsp: 1366 hbeg: 1414 hend: 1478 httl: 1582
display-manager-start[1846]: vdsp: 768 vbeg: 772 vend: 779 vttl: 792 flags: 9

Since theses messages aren't very useful, I propose to remove the `-logverbose`
and `-verbose` options from the XServer arguments.
libtoxcore: bump, build DHT bootstrap daemon
nixos: tox-bootstrapd service
modules: Add mkSinkUndeclaredOptions.
jasper:  Patch for CVE-2014-9029 via RedHat.

Also update homepage.
jasper:  Patch for CVE-2014-8137 via RedHat.
jasper:  Patch for CVE-2014-8138 via RedHat.
attic: fix sha256
shotwell: uses icons from gnome3.gnome_icon_theme and gnome3.gnome_icon_theme_symbolic
Merge pull request #5432 from mcmtroffaes/feature/shotwell-icons-fix

shotwell: uses icons from gnome3.gnome_icon_theme and gnome3.gnome_icon_theme_symbolic
shotwell: Fix "Using the 'memory' GSettings backend" (fix suggested by lethalman, see issue #5433).
Also install hicolor_icon_theme.
Merge pull request #5434 from mcmtroffaes/feature/shotwell-gsettings-fix

shotwell: use gsettings dconf backend, use hicolor_icon_theme
Merge pull request #5419 from ehmry/tox-bootstrapd

tox-bootstrapd
maxima: update to version 5.35.1
wxmaxima: update to version 14.12.1
pavucontrol: use gnome icons (fixes issue #5330).
easytag: Fix "Using the 'memory' GSettings backend" (see issue  #4415).
services.mpd: use systemd's user option

For some reason, mpd fails to open the sound card if using mpd's user
option. Starting mpd directly as the mpd user works for me.
Merge pull request #5435 from mcmtroffaes/feature/pavucontrol-fix-icons

pavucontrol: use gnome icons (fixes issue #5330).