* Adds Podcast Episode metadata as JSON to avoid scraping the HTML
* Uses app_url helper instead of app_protocol_and_domain string interpolation for podcastImageUrl
* Adds podcast_episode#mobile_player_metadata, cleans eslint/codeclimate mess I made & adds tests
* Removes an extra line to fix codeclimate
* Removes unnecessary return
* First experiment with supressing audio playback on native iOS
* Adds load audio message posting
* First version of refactor working on web
* handlePodcastMessages now receives messages sent into JS from native iOS app
* bump back to "v2" local storage key or playback state
* terminatePodcastBar now clears the currentAudioState
* function getMediaState now initializeMedia, fixes audioExistAndIsPlaying for web, better playAudio error management & others
* Fixes bug in playAudio() & clears audioInitialized when no Podcast was initialized
* Codeclimate tweaks
* Reorders functions to comply with codeclimate
* More codeclimate reordering & fixes
* Upgrades the audio bridge messages to JSON instead of strings
* codeclimate doh
* Allow users to follow podcasts
* Only display podcasts user follows
* Add main_color_hex to factory
* Fix podcast test and modify styles
* Fix tests
* Remove weird test