Revisions to DatetimeField to have better HTML5 fallbacks

[bergice]

No description provided.

[maxime-rainville]

Code looks OK. However, I'm not sure what part of the issue we are trying to fix here.

That makes it difficult to actually test.

[maxime-rainville]

When accessing the Uploaded, Last Edited dates in asset admin, I'm still getting the en_US format in all browsers.

The underlying issue appears to be coming from this commit. silverstripe/silverstripe-framework@33a013a

[bergice]

@maxime-rainville I think this could be happening because of the member locale:

Just tested on my computer and changing it seemed to fix the issue.

[maxime-rainville]

@bergice Tried siwtching to English UK and French. I'm always getting the date in en_US on this end.

[bergice]

@maxime-rainville could you try overriding the locale in your _config.php?

[maxime-rainville]

There was a problem with MomentJS locale's not being loaded. They were included when the library was being compile without the -p flag. However, when compiled with it the Locale would be strip out to save space. So at run time, MomentJS would only know about en_US.

I added a bit of code to the Webpack config that copies all the local files to the dist folder. I added a Requirements call to LeftAndMain to load the Moment Loclaes based on the current default Locale for the project and the Member's Locale. This fix relies on silverstripe/silverstripe-framework#8726

[bergice]

@maxime-rainville I've made some further fixes on top of your fixes. Happy to merge this when you are.

[maxime-rainville]

Everything is good. Failure is just cause because the lib hasn't been rebuild. I just rebuild locally and pushed up. I'll squash/merge on green.