feat #1253 Correct interpretation of dates with localized months

Localized months were not recognized as valid inputs of the `aria.utils.Date.interpret` method.
This means that whenever the user selected a date in a DatePicker with output pattern containing "MMM" or "MMMM" (meaning with the localized short or full month), and then just changing, for example, the year, the entry could not be recognized.

This commit adds this feature. Also, the special case 04DEC/+13 now supports localized dates and the presence of spaces between day, month and year.

Close #1253

(cherry picked from commit 69276e1cccef1102adca8e56aa2303eb6720b083)

Conflicts:
	src/aria/core/ResMgr.js
fix #1177 Pointer cursor on Tab widget

The cursor CSS property on top of the Tab widget is now set to `cursor` unless the tab is disabled.
fix #1257 Wrong order of dayShort in Japanese

close #1258
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