Security improvements

[zulfgani]

Adding rel=noopener to target _blank links to a number of modules.

PR Type

What kind of change does this PR introduce?

• [x] Bugfix
• [x] Feature
• [ ] Code style update (formatting, local variables)
• [ ] Refactoring (no functional changes, no api changes)
• [ ] Build related changes
• [ ] CI related changes
• [ ] Documentation content changes
• [ ] Other... Please describe:

Summary

This PR can be summarized in the following changelog entry:

• Security: Adding rel=noopener to external links

Description

An explanation of what is done in this PR

• Added the ability to set all target _blank links to have the rel=noopener attribute

Test instructions

This PR can be tested by following these steps:

• Add any of the modules that has a url field
• Expand the url options by clicking the cog
• Check the relevant boxes for the url
• Inspect code with Dev tools to verify the addition of noopener to the url markup

Quality assurance

• [x] I have tested this code to the best of my abilities
• [ ] I have added unittests to verify the code works as intended
• [ ] Docs have been added / updated (for bug fixes / features)