Ariel Ponce 2cffe106b8 Allow to pass 0 as column value in List widgets
**Problem**: When overriden the columns value, if we pass 0 or '0', the condition is not met and therefore the column has a null value.

**Solution**: Check for not null in the condtion
2015-03-06 11:51:05 +01:00
..
2015-03-06 20:54:50 +11:00
2015-02-28 23:43:06 +11:00
2014-12-17 08:04:09 +11:00
2014-10-10 23:36:04 +02:00
2015-02-21 22:59:21 +01:00
2015-01-28 11:49:54 +11:00
2015-01-03 12:41:23 +01:00