Purge timspan variable from scripted templates.
SinglestatPanel: Added null point handling, and value to text mapping, Closes #1130, Fixes #1120, #951
Merge pull request #1109 from jklukas/master

Purge timspan variable from scripted templates.
Support for negative thresholds.
Graph: Fix to legend value Max and negative values, Fixes #1136
Merge branch 'master' of github.com:grafana/grafana

Conflicts:
	CHANGELOG.md
Merge pull request #1140 from johnou/support_negative_thresholds

Support for threshold colouring of zero / negative values.
SinglestatPanel: Fixed absolute drilldown link issue, Fixes #1150
Tech: updated angular libs
Firefox: Workaround for Firefox bug, casued input text fields to not be selectable and not have placeable cursor, Fixes #1123
Templating: added validation to template editor for variable names, Fixes #1133
Templating: added validation for allowed characters in variable names, Closes #1106
Graph: Fix for tooltip series order when series draw order was changed with zindex property, Fixes #1108
Annotations: added html sanitation to prevent markup injection/XSS, Closes #1121
Merge remote-tracking branch 'origin1/master'