* tech: annotations refactor, add tests for regions processing

* tech: remove unused imports from annotations tests

Temporary fix until we get jest tests working on Windows

Adds node before each command otherwise Windows does not understand
commands starting with ./

When loading a plugin and setting the path, an extra backslash sneaks
when running on Windows. Fixes #9597

sort order have now been inverted. Biggest values should
be at bottom of the graph.

ref #9538

fix: escape series name in graph legend, added aliasEscaped to time series model to reuse escape, fixes #9615

closes #9464

* tech: investigating karma + jest mix

* tech: migrating tests to jest

* tech: moved anoter test file to jest

* test: migrated two more test files to jest

* test: updated readme and made test fail to verify that it causes CI build failure

* tech: added code coverage for jest tests

* tech: testing codecov coverage

* tech: migrated more tests

* tech: migrated template srv to typescript and the tests to jest

* tech: minor build fix

* tech: build fixes

* build: another attempt at fixing go test with coverage

Fix typos in init.d comment

* 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