Update success and error messages

Author: ernilambar

features/signup.feature

@@ -31,7 +31,7 @@ Feature: Manage signups in a multisite installation
 		When I run `wp signup activate bobuser`
 		Then STDOUT should contain:
 			"""
-			Success: Signup activated.
+			Success: Signup 1 activated.
 			"""
 
 		When I run `wp signup list --fields=signup_id,user_login,user_email,active --format=csv --active=1`
@@ -65,7 +65,7 @@ Feature: Manage signups in a multisite installation
 		When I run `wp signup delete bobuser@example.com`
 		Then STDOUT should be:
 			"""
-			Success: Signup deleted.
+			Success: Signup 1 deleted.
 			"""
 
 		When I try `wp signup get bobuser`
@@ -87,7 +87,7 @@ Feature: Manage signups in a multisite installation
 		When I run `wp signup activate bobuser`
 		Then STDOUT should contain:
 			"""
-			Success: Signup activated.
+			Success: Signup 1 activated.
 			"""
 
 		When I run `wp signup get bobuser --field=active`
@@ -116,7 +116,7 @@ Feature: Manage signups in a multisite installation
 		When I run `wp signup activate bobuser`
 		Then STDOUT should contain:
 			"""
-			Success: Signup activated.
+			Success: Signup 1 activated.
 			"""
 
 		When I run `wp site list --fields=domain,path`

src/Signup_Command.php

@@ -222,9 +222,9 @@ public function activate( $args, $assoc_args ) {
 		}
 
 		if ( is_wp_error( $result ) ) {
-			WP_CLI::error( 'Signup could not be activated. Reason: ' . $result->get_error_message() );
+			WP_CLI::error( "Failed activating signup {$signup->signup_id}." );
 		} else {
-			WP_CLI::success( "Signup activated. Password: {$result['password']}" );
+			WP_CLI::success( "Signup {$signup->signup_id} activated. Password: {$result['password']}" );
 		}
 	}
 
@@ -252,9 +252,9 @@ public function delete( $args, $assoc_args ) {
 		$result = $wpdb->delete( $wpdb->signups, array( 'signup_id' => $signup->signup_id ), array( '%d' ) );
 
 		if ( $result ) {
-			WP_CLI::success( 'Signup deleted.' );
+			WP_CLI::success( "Signup {$signup->signup_id} deleted." );
 		} else {
-			WP_CLI::error( 'Error occurred while deleting signup.' );
+			WP_CLI::error( "Failed deleting signup {$signup->signup_id}." );
 		}
 	}
 }