Item14185: improve cache maintenance of gathered css and js

Priority: Enhancement
Current State: Closed
Released In: n/a
Target Release:

Applies To: Extension
Component: PageOptimizerPlugin
Branches: master

Reported By: MichaelDaum
Waiting For:
Last Change By: MichaelDaum

• add a rest handler to purge the cache occasionally
• update cache files when source css/js is newer
• do not remove type info on script, link and style elems
• do not optimize javascript by default, PatternSkin doesn't cope well with it yet