Second Epiphany freeze break request

[mcatanzaro gnome org]

Hi,

Due to some changes in WebKit, some code that could previously be 
reached only once is now run multiple times. So Epiphany needs to be 
more careful about not doing one-time things there, like connecting to 
signals.

This commit:

https://gitlab.gnome.org/GNOME/epiphany/merge_requests/421/diffs

just moves the signal connections to a safer place.

Michael