No content license is specified

[philipashlock]

The website footer currently says "Content is licensed through Creative Commons" but that doesn't actually mean anything without specifying a license. An earlier version of the website linked to the Creative Commons Attribution license (specifically CC by-nc-sa 3.0) so perhaps you could continue using that (or the current 4.0 version). Creative Commons also provides guidance on marking your work with the license you've chosen at https://wiki.creativecommons.org/wiki/Marking_your_work_with_a_CC_license