Update documentation (v2.4.3?)

[jaykim1213]

• allow adding same components multiple times in 'sequence' using blocks: allow adding same components multiple times in 'sequence' using blocks study#1050
• Add independent webcam recording support across capture, storage, and analysis replay: Add independent webcam recording support across capture, storage, and analysis replay study#1159
• Refine startup error handling to avoid false storage disconnect warnings: Refine startup error handling to avoid false storage disconnect warnings study#1164
• Add highlighting what's undone in form: Add highlighting for invalid/undone questions and show error messages study#1209
• Fix UI break when user rejects mic permission: Fix UI break when user rejects mic permission study#1196