When this got rewritten to be different from nm-connection-editor's,
some of the ce_page_changed() calls accidentally got dropped, so
certain changes on these pages would not cause the "Apply" button to
become sensitive.
https://bugzilla.gnome.org/show_bug.cgi?id=693659
Use the 'image-button' style class to make symbolic buttons square
(as supported by latest Adwaita), and make sure to use the correct icon
size for all symbolics to avoid fuzzyness.
https://bugzilla.gnome.org/show_bug.cgi?id=693357
This code is fairly independent of the rest, and we don't want
net-device-wifi.c to become too massive and unmaintainable.
The code in connection-editor/ is fairly similar to
nm-connection-editor, with some simplification because we
currently only edit wireless connections.
The code in wireless-security/ is almost a straight copy
of the same code in nm-connection-editor, with some changes
to the .ui files to make them fit better in the new design.