Stopping a build should be an ajax call

Everyone can contribute. Help move this issue forward while earning points, leveling up and collecting rewards.

• Close this issue

Description

Rather than reloading the page, this should be an ajax call.

Proposal

Use an ajax call.

Links / references

suggestion: https://about.gitlab.com/2016/11/22/gitlab-8-14-released/#comment-3015413242

cc @jschatz1