* Removed "Clear" link in watchlist editor tools, as people were afraid to

* Removed "Clear" link in watchlist editor tools, as people were afraid to
  click it. Existing clear links will fall back to the raw editor, which is
  very easy to clear your watchlist with.

Watchlist editor:
	removing the 'clear' link
	passing through to 'raw' edit mode
Removed messages:
	watchlistedit-clear-title
	watchlistedit-clear-done
	watchlistedit-clear-legend
	watchlistedit-clear-confirm
	watchlistedit-clear-submit
	watchlisttools-clear
Removed functions:
	WatchlistEditor::showClearForm()