Finalize V1 of Updates

[gnunicorn]

Implement new Update Module UI flow https://github.com/acterglobal/UX/issues/137

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• [x] Add update flow:
  • [x] #1290
  • [x] #1291
  • [x] #1292
  • [x] #1293
  • [x] #1294
  • [x] #1384

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• [ ] View update flow:
  • [x] #1312
  • [x] #1313
  • [x] #1314
  • [x] #1315
  • [x] #1316
  • [x] #1317
  • [x] #1318
  • [x] #1163
  • [ ] #1385
  • [ ] Update Comments

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• [ ] Edit Updates:
  • [ ] #1319

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• [x] Delete an update
  • [x] #1320

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Additional points

• [x] Add support for dynamic background colour in slides
• [x] Remove Image Scaling
• [x] Remove caption text
• [x] E2E - Test suit for Text Slide
• [x] E2E - Test suit for Image Slide
• [x] E2E - Test suit for Video Slide
• [x] E2E - Test suit for Delete News Post
• [x] E2E - Test suit for Multi Slides Post
• [x] #1384

Bugs

• [x] #1352
• [x] #1361
• [x] #1376
• [x] #1398
• [x] Update Frozen after deletion https://github.com/acterglobal/a3-meta/issues/93
• [x] #1388
• [ ] #1387
• [x] #1389
• [x] #1400
• [x] #1405
• [x] #1406
• [x] #1409
• [x] #1410
• [x] #1411