datepicker doesn't display the right first day of the week for the catalan language

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 6.2.X EE, 7.0.0 M7
• Fix Version/s: 6.2.4 CE GA5, 6.2.X EE, 7.0.0 M7
• Component/s: ~ [Archived] Frontend Infrastructure
• Labels:
  • liferay-fixpack-portal-66-6210
• Branch Version/s:
  6.2.x
• Backported to Branch:
  Committed
• Story Points: 9
• Fix Priority: 4
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal-ee/pull/11078

1. Create a web content structure (str1), adding a field type date
2. Create the template for this web content structure: tpl1
3. Go to my account and select Catalan as language
4. Go to the wcm and add an str1 web content.
5. Try to select a date using the date picker.

Result The first day of the week is the diumenge dg Unable to render embedded object: File (cal1.png{thumbnail) not found.
Expected The first day of the week is the "dilluns" dl