Fix ubuntu touch issue with emoji picker / Qt 5.9

Class enums are considered scripted values...
And ToolButton does not have any icon concept...
12 jobs for master-ubuntu-touch in 19 minutes and 2 seconds (queued for 38 minutes and 46 seconds)
Status Job ID Name Coverage
  Test
passed #11054
clazy

00:00:54

passed #11055
qmllint

00:00:17

 
  Build
passed #11059
archlinux

00:01:08

passed #11058
debian-sid

00:00:55

passed #11087
neon-bionic

00:00:53

passed #11056
ubuntu-trusty

00:00:54

failed #11057
neon-bionic

00:00:30

 
  Deploy
passed #11063
allowed to fail
android

00:05:01

passed #11061
allowed to fail
click-xenial

00:05:04

passed #11060
allowed to fail
linux-appimage

00:05:17

passed #11064
allowed to fail
mac-osxcross

00:04:23

passed #11062
allowed to fail
windows-mxe

00:05:06