Fixes to Exfoliation theme

Fix typo I made when fixing the themes CSS readability. After fixing the
padding so that it got applied to most browsers I found some of it to be
ugly and prefer it didn't exist and look the way it did before when it was
broken.

Some style fixes around how the pnp4nagios graph image tables and their
borders are displayed.
Merge pull request #343 from awiddersheim/fix_exfoliation_css

Fixes to Exfoliation theme
panorama: avoid useless update queries
panorama: added sounds to preferences
Fixes to Exfoliation theme

Make the "Could not retrieve graph data" text smaller. Center comment/downtime data.
Merge pull request #344 from awiddersheim/patch-1

Fixes to Exfoliation theme
panorama: make dashboard sounds work
panorama: sort fields by importance
panorama: disable sounds by default
panorama: remove inclsvc option for hosts, use filter instead
panorama: include acks/downtime settings in state calculation
panorama: fixed backends disable in settings menu
panorama: code clean up
panorama: reorder context menu
panorama: do not hide submenus on click
panorama: added details to context menu
panorama: fixed max state calculation
panorama: added icon labels
panorama: removed useless comma
panorama: hide labels on tab change