Locale info not getting updated very often on live translation utility

[jbphet]

An effort has been underway recently to add translation support for more locales and to improve the fallback handling (there are several issues related to this, a few of the major ones are phetsims/joist#963, https://github.com/phetsims/website-meteor/issues/489, and phetsims/chipper#1441). As part of the effort, changes were made to the shared chipper/data/localeInfo.json file, and Rosetta is supposed to re-read this file periodically from GitHub and thereby auto-update its list of locales. However, when the changes were made, Rosetta didn't update, and I had to manually restart it to get them to show up. I reviewed the log to see if I could determine whether updates to the locale data were occurring, and the were, but pretty infrequently. Here are the two most recent log entries that indicate a re-read of the local info file:

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May 17 20:24:05 phet-server2.int.colorado.edu rosetta[166423]: info: locale info is stale or nonexistent; getting it
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Jun 02 00:24:45 phet-server2.int.colorado.edu rosetta[166423]: info: locale info is stale or nonexistent; getting it
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This is a little over two weeks. I think I should shorten the time.

Note that this value isn't hard-coded into Rosetta, it's a configuration options in the rosetta-config.json file, and the options is called VALID_LOCALE_INFO_DURATION.

[jbphet]

On phet-server2, where the live instance of Rosetta runs, the configuration file contains the following line:

"VALID_LOCALE_INFO_DURATION": 1209600000,

This value is in milliseconds. I did the conversion, and this is indeed two weeks. I think I'll reduce it to 12 hours.

[jbphet]

I have changed the value in the config file to 43200000, which is 12 hours. I think that should do it, closing.