Add @marcus-herrmann PR #1 which improves keyboard accessibility of ProcessPageList, enabling use of spacebar to toggle actions open/closed.

CONTRIBUTING.md

@@ -48,7 +48,7 @@ of contributions in different repositories. Please review the instructions for e
 ## Pull Requests (PRs)
 
 - Pull requests should be submitted to the [processwire](https://github.com/processwire/processwire/pulls)
-  repository.
+  repository, and based on the [dev branch](https://github.com/processwire/processwire/tree/dev). 
 
 - Before submitting a PR, read the Contributor License Agreement (CLA) at
   <https://processwire.com/about/license/cla/> and indicate your agreement (electronic signature) 
@@ -63,8 +63,6 @@ of contributions in different repositories. Please review the instructions for e
   before submitting a PR. While it's not required that you adhere to the style guide, it does increase
   the odds that we may be able to directly merge your PR. 
   
-- Please base pull requests off of the latest ProcessWire 3.x development (dev) branch.   
-
 - Please only submit code that you feel confident is stable and you have thoroughly tested. 
   Verbose code comments are also appreciated when possible. 
   

wire/modules/Process/ProcessPageList/ProcessPageList.js

@@ -203,6 +203,21 @@ $(document).ready(function() {
 						});
 					}
 				}
+
+				$(document).on('keydown', '.PageListItem', function(e) { 
+					// PR#1 makes page-list keyboard accessible
+					e = e || window.event;
+					if(e.keyCode == 0 || e.keyCode == 32) {
+						// spacebar
+						var $actions = $(this).find('.PageListActions');
+						if($actions.is(":visible")) {
+							$actions.css('display', 'none');
+						} else {
+							$actions.css('display', 'inline-block');
+						}
+						return false;
+					}
+				});
 				
 				$(document).on('mouseover', '.PageListItem', function(e) {