zemanim2

fixes: - zeman out of range crash for e.g. 'Barrow, AK' - incorrect city information in US and IL - weird behavior around midnight - location edit field behavior - reset dialog remained - top of screen obscured on some devices improvements: - ability to remove locations visited in past - location widget is more logical and easy to use - reset works smoothly - added 'top margin' setting to allow for iOS "notch" - added 'about' page