Fix cancel button in the page of project edit not work (#23655)

Before, in project edit page, the cancel button is not work.

https://user-images.githubusercontent.com/33891828/227182731-6478e29f-0e52-48c4-beb0-6a7d1dda6a1d.mov

1. The wrong classname `cancel` was added to the `<a>` tag. That
classname caused the default click event of `<a>` tag to be cancelled.
Because we have the following settings in the global. So I remove the
classname `cancel`.

9be90a5875/web_src/js/features/common-global.js (L325-L327)

2. Another change is that page will redirect to the previous page.

https://user-images.githubusercontent.com/33891828/227187326-c653c6d6-9715-440f-a732-ba0a6f012c81.mov

templates/projects/new.tmpl

@@ -50,7 +50,7 @@
 				<div class="ui divider"></div>
 				<div class="ui left">
 					{{if .PageIsEditProjects}}
-					<a class="ui cancel button" href="{{.RepoLink}}/projects">
+					<a class="ui cancel button" href="{{$.HomeLink}}/-/projects{{if eq .redirect "project"}}/{{.projectID}}{{end}}">
 						{{.locale.Tr "repo.milestones.cancel"}}
 					</a>
 					<button class="ui primary button">