Server:
 - bootstrap scripts moved into a separate directory, they will be packed in one script
 - validation of form fields
 - reduced number of scripts and styles requested when a page loads
 - updated libraries: YUI v3.11.0, HTML5 Shiv v3.6.2
 - deleted unused libraries: google-code-prettify, holder

WebUI Maven Plugin:
 - build options added in a separate file (manifest.xml)
 - support libraries as YUI modules, bootstrap scripts as separate module
 - more flexible configuration of compressors and validators
 - support custom namespaces of modules