ui_changes

(Safari on Sonoma 14.3.1)
- [x] #346
- [x] #297
- [x] #299
- [x] #301
- [x] #343
- [x] #300
- [x] #302
- [x] #311
- [x] #317
- [x] #335
- [x] #337
- [x] #339
- [x] #331
- [x] 14. Drag-and-Drop does not snap to the road?
- [x] #305
- [x] #328
- [x] #306
- [x] #308
- [x] #304
- [x] #313
- [x] 22.When cancelling trip, says “Trip not cancelled”.
- [x] 23. Emulator after cancelled trip showing PAUSE/PLAY status?
- [x] #332
- [x] #348

### Major Bugs

- [x] #314
- [x] 25. All emulators are flashing. (fixed on #321 )
- [x] 26. Tracking is broken (off the road). (emulator Icon not staying on path)
- [x] 27. cancel trip not doing anything on a running trip.
- [x] #323
- [x] 29. unable to drag emulator when on a trip.
- [x] 30. After refresh, no emulators are shown. (probably fixed at #318 )
- [x] #322
- [ ] #326
- [x] #319
- [x] #320
- [x] 35. Refresh button should save selected emulator and map zoom position and layout. (needs more discussion)
- [x] #329
- [ ] 37. smoother/precise emulator position movement.
- [x] #341
- [x] #371
- [x] #373
- [x] #377
- [ ] #379
- [ ] #386
- [x] #392
- [ ] #395
- [x] #401
- [x] #402