roster: Replace ListView by TableView for better performance

9 jobs for use-tableview in 43 minutes and 38 seconds (queued for 51 minutes and 54 seconds)
Status Job ID Name Coverage
  Test
passed #32115
clazy

00:01:08

passed #32116
qmllint

00:00:23

 
  Build
passed #32119
archlinux

00:01:13

passed #32118
debian-sid

00:01:02

passed #32117
neon-bionic

00:01:24

 
  Deploy
passed #32122
android

00:12:27

passed #32120
linux-appimage

00:11:51

passed #32123
mac-osxcross

00:08:01

passed #32121
windows-mxe

00:06:05