I didn't do any re-designing, but did change `GtkFrame` to `HdyPreferencesGroup`, as that allowed using a `HdyPreferencesPage` like with the credentials page.
Testing Done:
Opened Preferences and didn't see any errors. Also, changed all settings and saw that debug log showed they were changed and prefs were re-saving.
Reviewed at https://reviews.imfreedom.org/r/1435/
# 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: