Bug 13211: Added Google Indic Transliteration as a System Preference

Bug 13211: Added Google Indic Transliteration as a System Preference

Test scenario:
1. Apply the patch
2. Run updatedatabase.pl
3. Login to Koha and go to Adminstration.
4. Click on Global system preferences.
5. Search GoogleIndicTransliteration and choose value "Show".
6. Apply patches on bug 13144
7. Go to OPAC and see GoogleIndicTransliteration coming on Masthead.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>