Epiphany Freeze Break request

[Alexander <exalm7659 gmail com>]

Hi,

I would like to ask for a freeze break request to improve navigation gestures in Epiphany by using gesture from WebKit instead of a custom implementation.

The MR[1] removes custom gesture implementation, toggles WebKit settings property to enable the gesture, and adds it to shortcuts dialog. Finally, it reduces shortcuts dialog height because of the added gesture, going from [2] to [3].

The MR introduces no new strings.

The feature has not been introduced before because the corresponding WebKit release (2.23.90) is not yet out as of the time of writing.

[1] https://gitlab.gnome.org/GNOME/epiphany/merge_requests/183

[2] https://imgur.com/a/gYeITyQ

[3] https://imgur.com/a/QvWEv46