Various fixes

[NicoPennec]

Problem

• Errors are raised on the browser console in the News Feed page and Comment widget.
• On the Edits page, sorting by column does not work.
• Some outdated npm dependencies.
• The code base contains deprecated Vue notations (::v-deep and functional)

Solution

• Fix silent errors.
• Add missing code to enable sorting by column on Edits page.
• Bump minor & major npm dependencies and migrate code if required.
• Fix deprecated legacy Vue notation:
  • Use :deep()instead of ::v-deep, or remove code is useless.
  • Rework SortingInfo widget without the deprecated functional declaration.