Hovering moderators in groupchat nicklist causes exception
Note that with swedish locale, moderators come before participants so it could have to do with order rather than user level.
Traceback (most recent call last):
File "/usr/share/gajim/src/groupchat_control.py", line 2335, in show_tooltip
position[1] + rect.y)
File "/usr/share/gajim/src/tooltips.py", line 143, in show_tooltip
self.populate(data)
File "/usr/share/gajim/src/tooltips.py", line 336, in populate
{'owner_or_admin_or_member': uf_affiliation}
ValueError: unsupported format character 'a' (0x61) at index 28