Salvete!
GoogleIndicTransliteration is a nifty Koha feature allowing easy typing and searching in several (mainly Indic) languages to a lot of users from the Indian sub-continent and elsewhere.
However, a MIXED CONTENT bug prevents it from working if the OPAC is run over https. It is however a trivial fix and I've filed a bug (id 17103) on the bugzilla with the patch to fix it.
For non IT geeks, here's a blog post that tries to explain the issue and how to fix it in simple terms - http://blog.l2c2.co.in/index.php/2016/08/12/koha-opac-over-ssl-breaks-google...
As my glorious Vice President would say "This is a big F* deal." Thank you a thousand times over for this! I can remember the fits one used to have to go through to input Marathi. anyonethathelpedonthis++ Cheers, Brooke