panelmeta: fix metrics tab title.
Merge pull request #1057 from kaos/master

panelmeta: fix metrics tab title.
SinglestatPanel: mini fix
SharePanel: fix for interval variables and auto value, Fixes #1056
Graphite: annotations stop working after recent change to millisecond resolution, Fixes #1061
SinglestatPanel: Added integration with drilldown link feature, if a drilldown link is present the entire singlestat panel will act as a link, with hover tooltip containing the link name, #951, #1041
SinglestatPanel: small fix for drilldown link click while fullscreen mode, #1041
SinglestatPanel: another small fix for drilldown link click while fullscreen mode, #1041
add feature: threshold_count (fixes #1015)
add graph visualization option.