Moves to a nicely spaced `GtkListBox`. The avatar is implemented using `AdwAvatar` solely for the autogenerated colour for accounts without an icon to give them some uniqueness, but it could be moved to `PidginAvatar`.
As a followup, I'd probably move the Account Editors from a separate dialog to stack within the manager, similar to how the Plugin dialog works. Neither the previous manager nor this one prevents you from opening two editors for an account, but this would remove that issue as well.
Testing Done:
Toggled enabled/disabled to check that account status worked and was displayed. Added a few bogus accounts to confirm that errors are shown. Activated a row to show the editor. Hit the delete button and cancelled/approved and confirmed that account was kept/removed.
Reviewed at https://reviews.imfreedom.org/r/2079/
# UPDATING VERSION NUMBERS FOR RELEASES
#
# The version number is:
# <major>.<minor>.<micro><extra>
#
# micro += 1
#
# If any functions have been added to libpurple, Pidgin, or Finch:
# micro = 0
# minor += 1
#
# If backwards compatibility has been broken in libpurple, Pidgin, or Finch:
# micro = 0
# minor = 0
# major += 1
# purple_soversion += 1
#
# extra should be similar to one of the following: