Forcing all links to use https

Plone Support Administering Plone sites
1

Hello!

I would like to know if there is a way to force all the links in my Plone site to use https, instead of http. I'm using Plone 4.
For example:
Use
<a href="https://youtube.com/">YouTube</a>
instead of
<a href="http://youtube.com/">YouTube</a>

I appreciate any help

Thanks!

2

In the past I've unleashed https://pypi.python.org/pypi/rt.bulkmodify on some sites, but that was for Plone 4/Archetypes.
According to http://stackoverflow.com/questions/28591423/how-to-search-and-replace-dexterity-content-in-plone-using-rt-bulkmodify some work has been done on that, but I don't think that's finished.
It would certainly be a useful product to have working on Plone5