show all numeric columns in singlestats/graph2

Small license correction

It seems the license should be applied little bit differently -
https://github.com/search?l=&o=desc&q=license%3Aapache-2.0&s=stars&type=Repositories.

Also see https://apache.org/licenses/LICENSE-2.0#apply

* grafana/master: (56 commits)
  another change that didn't come with earlier commit
  change that didn't come with in last commit
  reversed dashboard-padding
  Update CloudWatch metrics/dimension list (#16102)
  brought back dashboard-padding and panel-padding variables, made dashboard-padding more specific
  fix(prometheus): Change aligment of range queries (#16110)
  Minor refactoring of testdata query order PR #16122
  cleaner version
  maintain query order
  Update PLUGIN_DEV.md
  Merge with master, and updated logo and name
  more fixes to snapshot
  more fixes to snapshot
  removed empty space in snapshot
  fixed snapshot for test
  removed dashboard variables, removed headings-font-family variable, created theme variables for links and z-index, removed unused class in _panel_editor and _dashboard
  Tooltip: show percent instead of value
  Right tooltip position
  Add "No data points" message
  Improve tooltip look
  ...

Removed dashboard variables + minor things

update cloudWatch metrics/dimension list

- future alignment cause issues with rate charts and the display of last
values
- this change modifies the alignment to use the last available aligned
end date and no longer possibly requests data from the future

Update PLUGIN_DEV.md

Very alpha pie chart

* grafana/master:
  flot pairs

calculate flot pairs

Graphite: fixed nonNegativeDerivative argument hidden if 0

update TableData model

Correct table names of sql storage for remotecache

Bump npm packages related to the dev process