Fix relationships & stuff, and make it work

.gitignore

LICENSE

bootstrap.php

composer.json

js/admin/Gulpfile.js

js/admin/dist/extension.js

js/admin/src/main.js

js/forum/Gulpfile.js

js/forum/dist/extension.js

js/forum/src/addReactionAction.js

js/forum/src/components/PostReactAction.js

js/forum/src/main.js

js/forum/src/models/Reaction.js

less/CommentPost-ReactAction.less

...ns/2016_07_17_000000_add_default_reaction_permissions.php

...ations/2016_07_17_000000_create_posts_reactions_table.php

migrations/2017_07_22_000000_create_reactions_table.php

src/Api/Serializers/ReactionSerializer.php

src/Event/PostWasReacted.php

src/Event/PostWasUnreacted.php