MM-16368 - Plugin Signing (mattermost#4145)

* MM-18797 - Switch webapp to use '/plugins/marketplace' API to install… (mattermost#3871)

* MM-18797 - Switch webapp to use '/plugins/marketplace' API to install marketplace plugins

* Updated tests

* Removing ui marketplace install event

* Revert "Removing ui marketplace install event"

This reverts commit 5419ce0.

* Updating redux dependency

* MM-19844 - Disallow plugin upload when PluginSettings.RequirePl… (mattermost#4109)

* MM-19844 - Disallow plugin upload when PluginSettings.RequirePluginSignature is true

* Fixed text

* Fixed snapshot

* Fixing snapshot

* Bumping redux ver

* temp redux commit

* update snapshots re: i18n

* Bumping redux ver

actions/marketplace.js

@@ -2,7 +2,6 @@
 // See LICENSE.txt for license information.
 
 import {Client4} from 'mattermost-redux/client';
-import {installPluginFromUrl} from 'mattermost-redux/actions/admin';
 
 import {getFilter, getPlugin} from 'selectors/views/marketplace';
 import {ActionTypes} from 'utils/constants';
@@ -31,7 +30,7 @@ export function fetchPlugins() {
 // installPlugin installs the latest version of the given plugin from the marketplace.
 //
 // On success, it also requests the current state of the plugins to reflect the newly installed plugin.
-export function installPlugin(id) {
+export function installPlugin(id, version) {
  return async (dispatch, getState) => {
  dispatch({
  type: ActionTypes.INSTALLING_MARKETPLACE_PLUGIN,
@@ -50,9 +49,9 @@ export function installPlugin(id) {
  return;
  }
 
- const downloadUrl = marketplacePlugin.download_url;
- const {error} = await dispatch(installPluginFromUrl(downloadUrl, true));
- if (error) {
+ try {
+  await Client4.installMarketplacePlugin(id, version);
+ } catch (error) {
  dispatch({
  type: ActionTypes.INSTALLING_MARKETPLACE_PLUGIN_FAILED,
  id,