Remove unused rangelim function (the macro still exists)
Add gettext to Travis build

Signed-off-by: Craig Robbins <kde.psych@gmail.com>
Fix Belarusian translation header

Signed-off-by: Craig Robbins <kde.psych@gmail.com>
Add (optional) client-side saving of server map to disk
Tweak core.serialize

This adds proper support for nested tables and improves performance a bit.
Add strict module

Also fix leaking globals found by it.
Fix wallmounted mesh rotations