The `X-GNOME-Bugzilla-*` entries were for use by bug-buddy, a GNOME 2
technology that's been gone for over a decade. These entries are
obsolete and can be removed from all desktop files.
The `X-GNOME-Settings-Panel` entry is also obsolete as far as I can
tell and only these panels had it in their desktop file: notifications,
sharing, sound and user-accounts. These entries can also be removed.
After removing the `X-GNOME-Bugzilla-*` entries, the desktop files have
no more variables in them. The meson `configure_file` step is therefor
pointless—there are no variables to configure. As such the
`*.desktop.in.in` files are renamed to `*.desktop.in` to reflect this
and `meson.build` files are modified to remove `configure_file` step.
The panel supports 2G/3G/4G GSM/LTE modems. CDMA2000 Modems are not supported.
If a supported modem is present, the panel will be shown and the modem will be
handled, else, network-panel shall manage the modem as it did in the past.
If more than one modem with data enabled is present, the user is allowed to set
priority of one SIM over the other (the priority is for SIM, not modem).
Fixes https://gitlab.gnome.org/GNOME/gnome-control-center/issues/132
