docs issue #4347: typo in url
docs issue #4535: with-log-folder changed to with-log-dir
docs issue #4288: update pnp screenshots; #4527: expander icon; #4522: remove install script
docs issue #4527: explain icon expander
docs issue #4527: fix screenshot placement
docs issue #4527: fix screenshot placement
fix idoutils db changes - incorrect icinga web config location

fixes #4203
Merge branch 'master' into next