Display flight date as UTC.
Display flight date as UTC.

Do not allow date to be implicitly converted to local time, which causes
the wrong date to be displayed if the system clock has a negative offset
from UTC (issue #3).

brisbori/jsigc,alistairmgreen/jsigc,alistairmgreen/jsigc,GlidingWeb/IGCWebView,GlidingWeb/IGCWebView,brisbori/jsigc,GlidingWeb/IGCWebView