don't mess with the long and short date formats defined in langinfo.xml

[Montellese]

http://trac.kodi.tv/ticket/15993 brought to my attention that we allow each language to define a long and a short date format but then we go and mess it up in the code by allowing to force short day and month names instead of long even when using the long date format. IMO that doesn't make any sense at all and especially not for System.Date info label.

This removes the possibility to force short names and only allows to choose between the long and short date format.

[MartijnKaijser]

landinfo.xml should define long/short date and not something else. Either we should use the long or the short as defined by the chosen language.

Edit: to clarify, yes this PR is as it should be.

[MartijnKaijser]

jenkins build this please
@Montellese something for backport or not? Could also be for point release if it needs to be tested first

[Montellese]

If we want to backport it we can still do it in a point release. It's not that big of a deal and I'm sure some people won't like it because it changes the way it used to be.

[MartijnKaijser]

@ronie you see any issues from skinning perspective?

[ronie]

potentially the space reserved by skins to display the date may be too short to contain the full day & month names.
i see no problem merging this for J*, but i don't think it should be backported to isengard.