Disable requirejs and wro4j by default

[manuelpichler]

Both extensions likely require some project changes to work, so they should be disabled by default.

They broke builds for me, where some JS files are available, but the project is not (yet) supposed to work with these two exts. I "had" to do:

requirejs.bootstrap.enabled = false requirejs.bundle.enabled = false wro4j.minifier.enabled = false