Added new properties to Observation class
Perform initial sync of observations after user first logins
Added a is_deleted property to Observation class
Observation sync - delete locally-removed observations
Full sync
Fix to local deletion of observations
Sync: Download observations' photos as well
Fix to photo sync
Small fix to the Observation model
Added observation date for observations list
Fixes to sync + new observations list layout
Various fixes to sync process
Added pull to refresh
Update to pull to sync
Updated readme file
Fixes to pull-to-refresh + new observation editor layout
Added a confirmation dialog when exiting the observation dialog
Added a 'view on inat' button to the bottom action bar
Removed options menu for obervation editor
Fixes to layout of observation editor