Add option to bundle jQuery and bootstrap

[kanduvisla]

Our build server (Jenkins) has the security policy that it does not allow loading external resources in it's reports. This means that the jQuery and bootstrap JavaScript and CSS files in the template are blocked, rendering the report broken.

Would it be an idea to add a configuration flag that bundles these assets in the reports so that there are no external dependencies required?

[zdenekdrahos]

@kanduvisla: what do you think about assets definition in .phpqa.yml?

report:
    assets:
        # default url -> absolute link <script>...
        bootstrap.js: https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js
        # local asset would be copied to `--buildDir` -> relative link in <script>...
        jquery.min.js: local-assets/jquery.min.js

    # possible shortcut - load assets from directory
    assets: local-assets/ 

[kanduvisla]

Perhaps it would be nicer to have a boolean flag that downloads it from the CDN during build. In that case you don't need to 'pollute' your repository with assets that are not directly project-related. For example:

report:
    assets:
        # false: templates will have links to CDN (default)
        # true: assets will be downloaded and bundled with build
        bundle_with_report: true

[zdenekdrahos]

Ok. At first, I thought that downloading assets during build might be a problem.
I'll ask you for review in a PR.

[kanduvisla]

No, the problem is that the build server (Jenkins in this case) does not allow loading external assets to prevent XSS. If the assets are bundled with the build/reports, it should not be a problem.