Table on Main.WebHome is missing the header

AFFECTS:

• xwiki:Main.WebHome (en, fr, ca, pt_BR)
• xwiki:XWiki.AccountValidation (redirects to Main.WebHome)

ERROR:

• org.xwiki.test.webstandards.CustomDutchWebGuidelinesValidationTest.Validating HTML5 Dutch Web Guidelines validity for: xwiki:Main.WebHome executed with credentials Admin:admin (from org.xwiki.test.webstandards.AllTests)
• ERROR: At least one table has been found that uses no th element.
• ERROR: No headers or id attributes have been found. When not using these be advised to use the scope attribute instead to associate table labels (<th> cells) with columns and rows. (see R-pd.11.4).

INVALIDATES:

• Dutch Guidelines: {{validateRpd11s2() validateRpd11s5() }}
  • https://github.com/xwiki/xwiki-platform/blob/master/xwiki-platform-tools/xwiki-platform-tool-standards-validator/src/main/java/org/xwiki/validator/DutchWebGuidelinesValidator.java#L1065
  • https://github.com/xwiki/xwiki-platform/blob/master/xwiki-platform-tools/xwiki-platform-tool-standards-validator/src/main/java/org/xwiki/validator/DutchWebGuidelinesValidator.java#L1116
• R-pd.11.2 "Use the th (table header) to describe a column or row in a table with relational information."
• R-pd.11.5 "Use the headers and id attributes to associate table labels (th cells) with individual cells in complex tables."

EXPLANATION:

• Data tables should contain a header
  Tables which contain data (as opposed to layout tables) should contain proper table header elements to mark them for screen readers and enhance the structure of the document.

FIXES:

• VAR1: TH + add "scope" attribute + adjust styling for table header to remove the border and spacing + apply to translations pages
• VAR2: Replace the table with divs, since this is not a data table. Use grid or floating containers