improved history
implemented overlay view for tags
implemented comment overlay
improved button line dset
minor code improvments
Protocol is working now mainly
removed deprecated subwindows
added delete group
autoremove whitespaces
extended caching
extended acls cache
set everywhere the same package tech_core/cache
improved the cachekey builder algorithmus
protocol is now using the level1 cache if applicable
fixed getter for the level caches
improved the cache usage