Handle auto mode on listrotators

In TimeInput::valueCharacteristics, don't pass precision and calendarmodel
if in auto mode. In TimeInput::draw, update precision and calendarmodel values
after parsing if in auto mode. In GlobeCoordinate::draw, update precision value
if in auto mode.
Merge pull request #37 from wmde/dontPassAutoCharacteristics

Don't pass precision and calendarmodel if set to auto