* Added basic navigation test for StandardCamera & SoundRecorder
* Abstracted camera nav buttons and used in SoundRecorder
* Show sounds in the MediaViewer
* Added sounds to ObsEdit, w/ MediaViewer support
* Ensure sounds get both uploaded and added to observations
* Local sound deletion
* Remote sound deletion
* Rudimentary and deeply unperformative sound visualization
Closes#869
* Extracted non-photo stuff from PhotoDisplay
* Separate component for FaveButton
* Prevent faves while signed out
* Separate component for nav header
* Stick nav header while scrolling until tabs
* Nav header has slight gradient for visibility over white content
* Renamed ObsDetails media components so they're not focused on photos
* Data and layout changes leading up to sound player on ObsDetail
* Add sound player to ObsDetails
* Swiping away while playing should pause playback
* Swiping back to sound and playing again should resume where you left off
* Allow viewing media while offline (images may be cached)
* Stop playback when navigating away from ObsDetails
* Fetch sounds in Explore so we can show sound icon
* Map all observation objects in explore with Realm-ish attributes
* Shows notice when user or obs is opted out of Community Taxon on ObsDetails
(closes#882)
* Unifies mapApiToRealm methods around a single interface
* Ensure that the remote obs used on ObsDetail is normalized to look like a
local obs
* Ensure some tests that use signIn() have isolated Realm instances
* Update current user's obs from ObsDetails (closes#1045)
* Fixed CC0 license display on ObsDetails (was not actually related to
updating the local copy of the obs
