Docs for mssql for #11642

Docs variable interpolation

Was missing a tilde in the tag_values example

removed padding and moved carrot

for some reason the linter lints files in /vendor
which it should not. So we have to remove it until
it works as expected

ref #10381

this makes it possible for the plugin repo
to provide the correct package if arch and os matters

docs: What's new in v5.1 

* master:
  build: only lint the pkg folder
  changelog: adds note about closing #11476
  singlestat: Fix optimization in setTableColumnToSensibleDefault
  influxdb: Check before assuming first column to be 'time'

add's info about new template variable interpolation

Improved scrolling experience

reduce content a little bit and highlight mssql and prom heatmap

influxdb: Check before assuming first column to be 'time'

Add gometalinter to CircleCI

remove unused variables detected by varcheck

csv option in postgres/mysql docs and the regex option in the
graphite docs

ref #11388 and ref #9911 and ref #10366