Hotfix release 2.16.1

* Bumps Batch Explorer to version 2.17.0

* Restores build version string for release packaging

* Fixes AB#1031: Updates vulnerable http-cache-semantics dependency

Also replaced the vulnerable download module with node-downloader-helper.

* Non-home tenants are inactive by default

Users may opt in to authenticate specific tenants by activating them in the authentication settings page.

* Merges release 2.16.1 into master (#2661)

* Restores build version string for release packaging

* Fixes #2659: Removes test code

* Prepare for hotfix release 2.16.1

* Remove custom themes (#2663)

* Fixes #2662: Restores Python backend

Updated Batch CLI extensions (v9.0.0) require `azure-multiapi-storage` as explicit requirement.

* Update python dependencies (#2682)

* Theme colors will only show in dev mode (#2697)

* Add Developer menu item and add theme colors under it
- running into issue with surfacing isDev

* Only show Developer menu item during developer mode
* typo fix

* Switch  hardcoded color values to use theme colors

* Fix unit tests

* Remove fdescribe

* Cloud Service Deprecation Warning on Pool Details (#2702)

* Add banner in pools for cloud service pool deprecation
* small typo fix

* Fix wording

* Update wording

* focus first element after activating ‘Job preparation task’

* focus first interactive control in Storage accounts pane

* focus first element in complex-form afterViewInit

* update form-field prefix and suffix styles

* update monitorChart colors

* update monitor chart tooltip config

* update mat-tab-group labels

* fix @azure/storage-blob usage (#2709)

* Add jasmine-axe for Batch Explorer unit tests (#2587)

* Initial setup for jasmine axe

* Add axe for accessibility testing
* Add accessibility tests for a few UI components

* Update package lock

* Testing to see if pipeline completely passes

* wip

* Update package-lock

* Remove console log statement

* Remove failing test (fix and re-add them later)

* Remove cross-env

* delete metadata row

* Fixes AB#950: Focus not visible for radio buttons

* Fixes AB#865: Focus not visible for multiple controls

* Fixes AB#990: Focus moves to background when pop-up is open

* Fixes AB#702: Focus ring not visible

...when tab order reaches table for the first time without interacting with the table using the arrow keys

* Fixes AB#671: When closing select dropdown with esc key the whole dialog is closed

* Fixes AB#290 removing pointer events on canvas

* Fixes AB#462 - Changing input boxes to bordered boxes.

* Updated changelog and version. (#2719)

---------

Co-authored-by: Rena <[email protected]>
Co-authored-by: David Watrous <[email protected]>
Co-authored-by: Waseem Dahman <[email protected]>
Co-authored-by: Waseem <[email protected]>
Co-authored-by: Haopeng Wang <[email protected]>
Co-authored-by: “aibiber” <“[email protected]”>
Co-authored-by: Robert Taft <[email protected]>
Co-authored-by: robtaft-ms <[email protected]>