Mac App isn't an installer, it's a disk image [ci skip]

i18n for activity feed on homepage

i18n for some of our list views

Don't update state in SQL editor variable pane on every text change

Support for Alerts on Questions

This commit has the backend code needed to support alerts. From the
frontend perspective, Alerts is separate from pulses and has a
different endpoint, however much of the backend code and database
tables are shared. A few new columns were added to the pulse table to
support alerts, but most of the data is the same between pulses and
alerts.

This also adds several "meta-notifications" around alerts to let users
know when they've been added to an alert, removed from an alert or if
a question has changed such that the alert is no longer meaningful.

This fixes #1372, fixes #6261 and fixes #5768.

This commit has the UI for users to add alerts to a question. Admins
are able to setup alerts for questions and modify alerts that users
have setup.

Handle default values for Dimension (Field Filter) params

Xray insights batch 1

Toggle Shown/Hidden Table Column Settings

Improve performance of toggle all columns in table settings. Add null state to tables with no columns.

Output sampling of X-ray dataset outputs