Show dates browser-localized

[Max13]

Changed moment's format to short format, which is correctly shown depending on browser's locale

[taylorotwell]

@themsaid is this a good idea?

[Max13]

@taylorotwell I just want to add that short formats (LL instead of MMMM Do, YYYY for instance) produce the exact same output. So currently, there is no downside about it. The benefit is, moment has already localized these pre-defined formats.

[themsaid]

It could be considered a breaking change since dates will get displayed in the localized form, now it'll always be in English.

Can consider this in a future update.

[Max13]

@themsaid Actually, only resources/assets/js/spark-bootstrap.js is breaking localization. The other files will still show the dates as they currently are.

I may sound picky, but I think the more we can pull without breaking, the less there will be changes between current version and updates. I have modified a lot of files to suits my needs (which could be general needs, like l10n), but for each new patch, I have to review all diffs.

I know the best is to stick to a working version, but I haven't started to write my project yet, so I'm updating even the smallest patch ;)

[themsaid]

We have to be very careful with Spark changes in order not to break people production apps, that's why if the change isn't fixing anything we tend to keep it for a point release where we can announce the changes in a more clear way.

Will keep this PR in my trello board for when the time comes :)

[Max13]

I agree with you on the process of not breaking changes. I was just saying that some changes I did were not breaking anything.

Anyway, I hope it will be for sooooon ;)

I'll be more careful about my PR next time. Thx