Add UI resources
Add js-lib
Add js-nx
Add UI app
Create UI plugin

?debug mode should work across plugins now, but the plugins are not
packaging the non-minified sources yet
Fix image paths
Include js sources for ?debug mode
Use non-deprecated property
Move redirector resource for /->/index.html
Move Sonatype-content.css to restlet plugin for now (content/error page)
Redirect /images to /static/images

Exported location for resoures in plugins is /static. References to
/images are scattered around all plugins. Redirect for compatibility.
Remove UI in nexus-webapp
Enable debug mode for UiContributorBuilder
Only redirect images if they are not found
Add config to copy js files to /static/js to plugin-parent
Remove unused dependency
Add ui plugin to dist
Move UiContrib and related classes from core to plugin
move js/css to resources/static
Do not cache UiContributionBuilder

If it's used more than once, first hit with or without "?debug" will set
the state for the plugin