Style changes for unwatch actions

- Reverse 'watch' / 'unwatch' star icons
- Truncate title texts
- Minor indentation fix

Bug: T132975
Change-Id: I1dbd6d1480f6ef5a45184271c932cd27258f7424

includes/formatters/EventPresentationModel.php

@@ -631,7 +631,7 @@ abstract class EchoEventPresentationModel implements JsonSerializable {
 					'description' => $this
 						->msg( 'notification-dynamic-actions-' . $availableAction . '-confirmation-description' )
 						->params(
-							$title->getPrefixedText(),
+							$this->getTruncatedTitleText( $title ),
 							$title->getFullURL()
 						),
 				),
@@ -645,12 +645,17 @@ abstract class EchoEventPresentationModel implements JsonSerializable {
 
 		return $this->getDynamicActionLink(
 			$title,
-			$isTitleWatched ? 'unStar' : 'star',
+			// Design requirements are to flip the star icons
+			// in their meaning; that is, for the 'unwatch' action
+			// we should display an empty star, and for the 'watch'
+			// action a full star. In OOUI icons, their names
+			// are reversed.
+			$isTitleWatched ? 'star' : 'unStar',
 			// notification-dynamic-actions-watch
 			// notification-dynamic-actions-unwatch
 			$this->msg( 'notification-dynamic-actions-' . $availableAction )
 				->params(
-				$title->getPrefixedText(),
+					$this->getTruncatedTitleText( $title ),
 					$title->getFullURL( array( 'action' => $availableAction ) )
 				),
 			null,