move default web.css styles to component Web.css

order is now:
1. Kwc/Root/Abstract/Web.css
2. web/component/Root/Web.css
3. component styles

this should give us best flexibility
remove styles already in kwf Web.css
rename class to match name in detail component
styling
if no lifetime should be used pass null parameter

else file backend interprets this as 0 lifetime which would cause immideate expiration
improve benchmark: use miss/hit term to have a clear difference to view-cache-disabled
Merge branch '3.4'