Merge branch 'develop' into 'master'

config/custom-environment-variables.json

config/default.json

src/app/components/cards/MarkdownViewer.jsx

src/app/components/cards/MarkdownViewer.scss

src/app/components/cards/PostFull.scss

src/app/components/cards/PostSummary.jsx

src/app/components/elements/EmbeddedPlayers/dapplr.jsx

src/app/components/elements/EmbeddedPlayers/dtube.jsx

...pp/components/elements/EmbeddedPlayers/example-players.md

src/app/components/elements/EmbeddedPlayers/index.jsx

src/app/components/elements/EmbeddedPlayers/soundcloud.jsx

src/app/components/elements/EmbeddedPlayers/threespeak.jsx

src/app/components/elements/EmbeddedPlayers/twitch.jsx

src/app/components/elements/EmbeddedPlayers/twitter.jsx

src/app/components/elements/EmbeddedPlayers/vimeo.jsx

src/app/components/elements/EmbeddedPlayers/youtube.jsx

src/app/components/elements/ReplyEditor.jsx

src/app/components/elements/ReplyEditor.scss

src/app/components/elements/TagList.scss

src/app/components/modules/Settings.jsx