introduce smtp config option for EHLO identity

Added --pluginUrl option to grafana-cli for local network plugin inst…

Update _navbar.scss

* replaced images, updating text(not finished)

* text uppdates for dashlist and singlestat(+img). updated the keyboard shortcuts

* deleted old shortcuts instruction

* another img update

with an alert rule that will always fire

* Added a timestamp option to single stat

* can now choose last time as value

* Finished last_time so it formats correctly, updated value stat

* fixed som issues, but still issue with testing

* Clean up after fake clock in test

* timezone-issue fix, fake time for from now test

* fix for timedifference

Add support for distributed tracing with Jaeger