Fix calendar unit test

fix_6829 [ci skip]

Data selector multi step refactor + replace field mapping with data selector

A way to check backend i18n

Fix data loading and loading state

Reduce number of Jest test runner worker threads

This commit reduces the number of test runner workers for Jest tests
from 10 to 8. This will use less memory and hopefully avoid Circle CI
4GB memory limit test failures. It also fixes some tests that have
nested `it` clauses. This doesn't run correctly on older versions of
Jest and will fail fast on newer versions of Jest.

Fixes #6790

Add i18n debug feature to assist in finding untranslated strings

Fixup expression name issues on MySQL [ci drivers]

Fix broken getting-started url.

Fixup delete database dialog

Ensure aggregation expressions have base_type included

HTML markup isn't supported inside an internationalized string

Fixes for i18n muckups as I find them.

This bug appears when an aggregate expression has a nested
expression. Previously it was only looking for an expression reference
and not a full expression.

Fixes #6363

Ensure collection_id is included in series dashcards

Hydrating series dashcards wasn't including the related collection
id. The collection id is one way in which permissions are
checked. This would manifest itself in the user having access to
something they shouldn't. As an example, if a dashboard had a single
card that was part of a collection the user wouldn't have access to,
and the user attempted to access it, they would get a 403. If a second
card was added and that card contained multiple (i.e. a series) due to
this bug, the second card wouldn't have a collection_id and thus we'd
assume the user has access to it. The permissions checking on the
dashboard only checks whether or not the user has access to at least
one card in the dashboard, thus giving user access to the dashboard.

Fixes #5266

Fix time datatype test failure on Oracle [ci drivers]

Oracle, mongo and redshift don't support the time datatype. A new test
covering dimension options for time fields was added, but included
those three databases in the test. This commit excludes them which
should make the test pass.

Add backend code to auto include CSVs on rows alerts

Time datatype support

Add Pulse integration tests

This was inadvertantly excluded from the pulse attachments
commit (de61b731).

This primarily focuses on a time picker rather than the date picker
when users are attempting to filter based on a time column. There are
also some minor changes to how time field results are displayed/formatted.

This commit adds code needed to query time fields and to filter by
time fields. Support is included for all database backends that
support time fields. Previously depending on the backend, the result
of querying a time field was either an exception or an incorrect
"zeroed out" date of 1970-01-01 followed by the time.

Fixes #5563, fixes #5829

Previously this was done by the frontend, including boolean that
enables it. This moves the logic to the backend.

Added CSV and XLS flags to pulse cards to the Pulse API

This commit adds attachment support to the pulse frontend. This commit
also automatically adds CSV attachments to alerts that are on "rows"
queries.