translate to english
add new helper that outputs includeCode in header/footer of page

to be used for various components that require output in header or footer with the advantage that it doesn't have to be inserted in master template
use new includeCode in all components that put code into header or footer
add favicon output to includeCode helper

used favicon can be configured using kwc.favicon config setting
also add debugData to header output
add default statistics and assets if there is no box

using that we don't need these in master.tpl
fix update with class parameter
Merge branch 'header-footer-code'