Promgen

- [BUGFIX] Fix for duplicate user subscribe 389
- [BUGFIX] Fix missing closing div tag which triggered VueJS error 385
- [BUGFIX] Hostname validator based off URLValidator 383
- [BUGFIX] Update validator to allow hostname only entries 386
- [CHANGE] Enable copied rules by default 391
- [IMPROVEMENT] Add support for SENTRY_SEND_DEFAULT_PII flag 393
- [IMPROVEMENT] Package updates 392
- [IMPROVEMENT] Support help_menu.inc.html override 388
- [IMPROVEMENT] Unify text on register buttons 390
- [INTERNAL] Update tests to use common test fixtures for better consistency 384

- [BUGFIX] envdir import fix 379
- [BUGFIX] Missing CSRF token on API page 374
- [BUGFIX] Use RegexValidator for validating hostnames 380
- [CLEANUP] Remove unused JS dependencies 378
- [IMPROVEMENT] Improve list rendering in Vue 373
- [IMPROVEMENT] Improve performance of rendering alerts and silences 372
- [IMPROVEMENT] Move silence form to a separate component 377
- [IMPROVEMENT] Replace Moment with Luxon 375

- [BUGFIX] Fix rest_framework/js reference 365
- [CHANGE] Stricter scrape test to better match Prometheus 366
- [IMPROVEMENT] Make RuleDetail page a bit more readable 368
- [IMPROVEMENT] Use v-model.lazy to reduce input lag 370
- [INTERNAL] Django version update 371
- [INTERNAL] Fix quotes to avoid confusing the html linter 369

- [CHANGES] Notification handling improvements 348
- [CHANGES] Use ManifestStaticFilesStorage for cache busting 356
- [DOCUMENTATION] add databse migration command in README.md 358
- [IMPROVEMENT] Change history dropdown 364
- [IMPROVEMENT] Fix Codespell errors 362
- [IMPROVEMENT] Show datasource load with colors 359
- [IMPROVEMENT] Update scrape to mimic Prometheus headers 357

- [BUGFIX] Ensure that our splay query cannot fail on DoesNotExist 340
- [BUGFIX] User notifier should only return enabled senders 345
- [CHANGE] Remove ikasan notifier 331
- [CHANGE] Stubs for including extra help information 333
- [CHANGE] Rename "Shard" to "Datasource" 309
- [DOCUMENTATION] Use Github pages for canonical documentation 332
- [IMPROVEMENT] Allow custom proxy for Slack notifier 336
- [INTERNAL] Upgrade to Django 3.2 338

- [IMPROVEMENT] Improved Alert detail view 313
- [BUGFIX] Move checks that require database, to post_migrate 314