code cleanup
fix url_prefix only once
retain site order while sorting
adjusted apache config when using naemon
make tests with different external urls possible
fixed displaying performance data with negative ranges
skip sites with no results
fixed url path
remove external request for precaching
move cookie session files to var folder

otherwise sessions will be removed on omd update
code cleanup
precompile not required at this step
set default product name
reports: fixed selecting wrong tab on rescheduling report
reports: make it possible to skip empty outages
updated disclaimer and copyright year
Render correct action and notes url in panorama

Fixes problem #267
Render correct action and notes url in panorama

Fixes problem #267
Merge pull request #268 from liedekef/patch-2

Render correct action and notes url in panorama
die with a useful message