Gave script groups clear names and sorted them.
Documentation in comments.
Add tests to check that no script has been left behind.
Corrected Lath to Latn (thanks to testing).
Rename langdb.js to ext.uls.data.js
Add ResourceLoader module ext.uls.data
Change-Id: I91fafa94ffd1eaf2d12c954fe3a71064276533f9
Lists without spaces after commas are considered one string,
which is probably not the thing that we want.
Change-Id: I738ecadd6d33089e63e8e454b3e89efb137aade0
