Tidy up "past sponsors" markup

[rparrett]

Objective

Tidy up this section of the tera template.

The output should be identical, except without the space between names and the following comma.

Solution

• Replace manual array filtering with filter filter
• Replace manual array index tracking with loop
• Get rid of pesky space between names and comma
• Replace spaces in names with non-breaking spaces so they don't get split onto two lines.

Before

After

[axlitEels]

Could also be great to somehow replace all spaces within each sponsor's name with NBSPs

[axlitEels]

| replace(from=" ", to=" ") after both donor.names should do the job.