add feat: config to open links with single click

[nojhan]

Instead of Ctrl-left click.

Note: I only have glade 3.22.2 instead of the 3.36.0 used for the previous setup.
I guess that's why there have been some editions in the XML, apart for the new checkbox.
I have absolutely no idea if that's a problem or not… the window works well on my Ubuntu 20.04, at least.

[mattrose]

This is definitely a feature I've wanted to add for a while! Thank you. I've been really busy but this is at the top of my to-merge list

[mattrose]

I get this error when trying to check the box

Traceback (most recent call last):
File "/Users/mattrose/Code/terminator/terminatorlib/prefseditor.py", line 1426, in on_link_single_click_toggled
self.config['link_single_click'] = widget.get_active()
NameError: name 'widget' is not defined

[mattrose]

And it doesn't seem to set the config variable properly. Can you take a look at this again?

[mattrose]

sorry, clicked wrong button there.

[nojhan]

It should be fixed now.

[mattrose]

Looks good, merging