Secure: Open help links in new tab

Problem:

The link to learn more about SAST in the MR opens a new page in the same tab. This is not optimal since the user might want to reference this page while leaving their work open in another tab.

Screen_Shot_2019-08-06_at_9.41.46_AM

Solution:

"Learn more about SAST" and other learn more links from this section should open the help page in a new tab.