pidgin/pidgin

clean up PidginCellRendererExpander

2020-11-04, Gary Kramlich
fdf04534e7d1
clean up PidginCellRendererExpander

Cleanup the PidginCellRendererExpander

Rename gtkcellrendererexpander.[ch] to pidgincellrendererexpander.[ch]

Reimplement the activate method so that the user clicking on the expander will toggle it.

Testing Done:
Connected a bonjour account, expanded buddies and groups. Also ran `ninja pidgin-pot`.

Reviewed at https://reviews.imfreedom.org/r/197/
libpurple/data/purple-url-handler.desktop.in
libpurple/protocols/null/nullprpl.c
pidgin/data/im.pidgin.Pidgin.desktop.in
sub/libpurple/data/purple-url-handler.desktop.in
sub/libpurple/protocols/null/nullprpl.c
sub/pidgin/data/im.pidgin.Pidgin.desktop.in