Fix for Thresholds tests

Adds backend code style guide

Co-Authored-By: bergquist <carl@grafana.com>

Explore: Query row using character refId instead of number

Cleaning up implicit anys in DashboardExporter and tests

Input to grafanaui2

Panels: fix loading panels with non-array targets

Use ora#fail instead of console.log

Add patterns to no-only-tests grunt task

Since with ora#fail you can stderr it instead of using the stdout,
and it's a bit nicer since it will show that cross sign :)

progress: #14714

add startValue to random_walk testdata scenario and random_walk_table

Explore: Fix log stats with long labels

Signed-off-by: Steven Sheehy <ssheehy@firescope.com>

make value processing/formatting more reusable

* grafana/master: (44 commits)
  feature(explore/table): Add tooltips to explore table (#16007)
  Update changelog
  Add check for Env before log
  Update index.md
  chore: Cleaning up implicit anys in manage_dashboard.ts and manage_dashboard.test.ts progress: #14714
  chore: Cleaning up implicit anys in app.ts progress: #14714
  changelog: adds note about closing #15836
  changelog: adds note about closing #6359 and #15931
  add partial
  Add check so that header is not sent for anonymous users
  Update config docs
  Add custom header with grafana user and a config switch for it
  changelog: adds note about closing #10816
  use constants for cache type
  updates old distcache names
  dont allow inifinite expiration
  return error if cache type is invalid
  use `Get` instead of `Find`
  avoid exposing cache client directly
  add docs about remote cache settings
  ...

Longer labels are now viewable as a tooltip in the Explore table

Signed-off-by: Steven Sheehy <ssheehy@firescope.com>

Only log connection string in dev environment