* graph: sort series in the same order as legend

closes #9538

* style: use function arrows

* graph: remove sort by legend option

sort series based on legend by default is sort order
is set and stack is enabled

* graph: remove useless sort

* graph: make code simpler

(prometheus) minor fix of auto complete

* modify $__timeGroup macro so it can be used in select clause

* fix $__interval_ms for postgres datasource

* use $__timeGroup macro in documentation

* fix annotation template query
remove title since its no longer used and add tags instead

* change __timeFilter macro to work on postgresql < 8.1 and redshift

* heatmap: fix Y axis rendering, #9576

* heatmap: fix color legend rendering

add $__interval and $__interval_ms as range vectors to
prometheus editor

(prometheus) fix to show vector range popup

When Messasge field is set for an alert, map it to the output field i…

Supports importing a module's contents with the
'* as module' syntax. The latest version of SystemJS turns
it off per default which broke several plugins.

* annotations: throw error if no text specified and set default time to Now() if empty, #9571

* annotations: fix saving graphite event with empty string tags

* docs: add /api/annotations/graphite endpoint docs, #9571

When Messasge field is set for an alert, map it to the output field in a Sensu check result. If Message is empty, send "Grafana Metric Condition Met"

(prometheus) allow ":" character for metric name

(cloudwatch) fix template variable expanding

Fix typo in PLUGIN_DEV.md