Panel: plugins panels can now reside outsude the app/panels directory, added example plugin panel
Graph: New series style override option 'Fill below to', useful to visualize max & min as shadow for the mean, #940
Graph: fill below to series override option not automatically adds lines=false, as overrides, if you want lines just for the fill below series just remove the overrides, #940
Graph: added typehead dropdown menu combination for the series override selection
Graph: fix for legends on the side and graph dimensions adaptation
Dashboard: removed wip stats panel from settings.js, accidental commit
Dashboard: fix for fullscreen mode and small gap sometimes showing the underlying dashboard
Graph: single series tooltip and unit format change fix, Closes #946
Merge remote-tracking branch 'upstream/master'