histogram: option to set point radius
added a 1 minute timeout to require.js.
Merge pull request #616 from spenceralger/requirejs-timeout

added a 1 minute timeout to require.js.
Fixed missing default mandate on filters
consistent top and bottom margins
do not show empty load/save dropdowns
Markers in histogram
Merge remote-tracking branch 'upstream/master'
Merge branch 'annotations'
readme update
Update README.md
Fix for overflowing modals
Merge remote-tracking branch 'upstream/master'
Removed debugging code
fix for markers in modes other than count
Added sparklines panel
Added cache-busting token for loading elasticsearch dashboards
fixes #628
shorter timespan tooltip
Merge remote-tracking branch 'dpb587/patch-fix-iexplore-caching' into iefix