unsupported locale setting in Linux on replay

[machawk1]

Upon replaying anything any URI-M, the datetime conversion method datetimeToRFC1123() is required to set the locale, which it does via locale.setlocale(locale.LC_TIME, 'en_US'). This is not a valid locale on Ubuntu 16.04 with the closest variant through locale -a being en_US.utf8. en_US is valid on macOS per locale -a but its utf8 variant is en_US.UTF-8, along with en_US. This subtle difference in the UTF8 variants might cause an issue. Given we are sorting 14-digit datetimes, LC_ALL might be sufficient and more compatible across platforms.

[machawk1]

Closed with 4066a3b