…rio setup (#271)

* StorySequencePlayer does not interfere with existing scenario setup and launch - Issue265

- added ScenarioSequencePlayer delegate to ScenarioViewController
- ScenarioViewController checks the scenarioID to see if an intro
sequence should play
- ScenarioSequencePlayer is a UIView that lays out its own subviews,
and dismisses on tap via the delegate method sequenceDidFinish
- existing setup functionality is not changed

…cies (#273)

* Added UI test target
* abstracted the collections of popups and sequences to their own
struct in order to make it easier to assert types and retrieve for
collections without needing to match strings.

* Fix label text fading too soon;  When a left and right event both had text, the left event would fade as soon as it was on screen.

* Add example outro sequence and update ScenarioViewController to handle outs

Moved the code to handle moving to the next question to a separate
function in order to be able to delay it if an outro sequence was
launched. This change fixes the unit test to account for that.

* Add json datasets; updated to use json

* Updated popup event player to not require a delegate

* Added accessibility IDs
* Updated StorySequencePlayer UI tests to use accessibility identifiers in all cases

* Updated image file names - For storysequenceplayer images, now standardizes as: “character_name^mood”. This is in preparation for a fix to the image swapping issue.
* Updated the model and json to use the new file names
* Fixed issue with swapping images instantly; still need to update the right side function
* Fixing label fading again

* Changed PopupEventPlayer to use sound file names instead of always using the same sounds via bool

- now the model expects a slide in sound file name and badge sound file
name
- leaving one or both empty will negate playing a sound at that time

Fix for story sequence player on iPhone X

* Animate remembers original duration set during initialization

* Story sequence player can show a skip notification

* Checked and updated unit test for StorySequences
* Checked and updated unit test for PopupEventPlayer
* Updated the PopupEventPlayer UI Test to use an accessibility identifier instead of view hierarchy searching
* Updated unit and ui test comments

#316)

* Updated inline markdown comments (OOC classes) for Jazzy documentation