2.8.4

1. Create admission form (#696)
2. Migrate Java code to Kotlin (#757, #766, #765, #764, #767)
3. Fix Floating Action Button bugs (#763, #769)
4. Add crop image feature in patient registration (#768)
5. Update UI to follow material design (#770, #778, #777)
6. Upgrade dependencies to the latest versions (#772)
7. Add expandable FAB for provider dashboard (#773)
8. Add empty active visits view (#771)
9. Mark patient deceased using coded response (#774)
10. Removed swipe actions in provider dashboard (#775)
11. Fix the reverse flipping bug in patient dashboard (#779)
12. Add allergy tab to fetch allergies from server (#780)
13. Finish migration from ActiveAndroid to Room (#781, #783)
14. Add repository layer in visit dashboard (#782)