(bug 40072) Add semantic CSS classes to identify changes list items

(bug 40072) Add semantic CSS classes to identify changes list items

In the special pages containing changes list, adding the following
CSS classes to revision rows:
    - mw-changeslist-date
    - mw-changeslist-title
    - mw-changeslist-separator (matching the dots, ". .")

This enhancement has been implemented to the following special pages:
    - [[Special:Contributions]]
    - [[Special:DeletedContributions]]
    - [[Special:RecentChanges]]
    - [[Special:Watchlist]]

It's also implemented on pages history.

Change-Id: I2385ef21d9aed4bdbe4971bfcfa28efaf058e7dd