Replace sprockets/browserify with Webpack (#2617)

* Replace browserify with webpack

* Add react-intl-translations-manager

* Do not minify in development, add offline-plugin for ServiceWorker background cache updates

* Adjust tests and dependencies

* Fix production deployments

* Fix tests

* More optimizations

* Improve travis cache for npm stuff

* Re-run travis

* Add back support for custom.scss as before

* Remove offline-plugin and babili

* Fix issue with Immutable.List().unshift(...values) not working as expected

* Make travis load schema instead of running all migrations in sequence

* Fix missing React import in WarningContainer. Optimize rendering performance by using ImmutablePureComponent instead of
React.PureComponent. ImmutablePureComponent uses Immutable.is() to compare props. Replace dynamic callback bindings in
<UI />

* Add react definitions to places that use JSX

* Add Procfile.dev for running rails, webpack and streaming API at the same time

app/javascript/mastodon/actions/mutes.js

@@ -0,0 +1,82 @@
+import api, { getLinks } from '../api'
+import { fetchRelationships } from './accounts';
+
+export const MUTES_FETCH_REQUEST = 'MUTES_FETCH_REQUEST';
+export const MUTES_FETCH_SUCCESS = 'MUTES_FETCH_SUCCESS';
+export const MUTES_FETCH_FAIL    = 'MUTES_FETCH_FAIL';
+
+export const MUTES_EXPAND_REQUEST = 'MUTES_EXPAND_REQUEST';
+export const MUTES_EXPAND_SUCCESS = 'MUTES_EXPAND_SUCCESS';
+export const MUTES_EXPAND_FAIL    = 'MUTES_EXPAND_FAIL';
+
+export function fetchMutes() {
+  return (dispatch, getState) => {
+    dispatch(fetchMutesRequest());
+
+    api(getState).get('/api/v1/mutes').then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(fetchMutesSuccess(response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => dispatch(fetchMutesFail(error)));
+  };
+};
+
+export function fetchMutesRequest() {
+  return {
+    type: MUTES_FETCH_REQUEST
+  };
+};
+
+export function fetchMutesSuccess(accounts, next) {
+  return {
+    type: MUTES_FETCH_SUCCESS,
+    accounts,
+    next
+  };
+};
+
+export function fetchMutesFail(error) {
+  return {
+    type: MUTES_FETCH_FAIL,
+    error
+  };
+};
+
+export function expandMutes() {
+  return (dispatch, getState) => {
+    const url = getState().getIn(['user_lists', 'mutes', 'next']);
+
+    if (url === null) {
+      return;
+    }
+
+    dispatch(expandMutesRequest());
+
+    api(getState).get(url).then(response => {
+      const next = getLinks(response).refs.find(link => link.rel === 'next');
+      dispatch(expandMutesSuccess(response.data, next ? next.uri : null));
+      dispatch(fetchRelationships(response.data.map(item => item.id)));
+    }).catch(error => dispatch(expandMutesFail(error)));
+  };
+};
+
+export function expandMutesRequest() {
+  return {
+    type: MUTES_EXPAND_REQUEST
+  };
+};
+
+export function expandMutesSuccess(accounts, next) {
+  return {
+    type: MUTES_EXPAND_SUCCESS,
+    accounts,
+    next
+  };
+};
+
+export function expandMutesFail(error) {
+  return {
+    type: MUTES_EXPAND_FAIL,
+    error
+  };
+};