Merge branch 'develop' of github.com:RocketChat/Rocket.Chat into feat…

…/new-threads

* 'develop' of github.com:RocketChat/Rocket.Chat: (42 commits)
  [FIX] Invalid CSS syntax (#17541)
  [NEW] Rewrite admin pages (#17388)
  [FIX] Replace postcss Meteor package (#15929)
  [FIX] Increasing highlight time in 3 seconds (#17540)
  [IMPROVE] Add new webhooks to the Omnichannel integration feature (#17503)
  [BREAK] Remove deprecated Omnichannel Knowledge Base feature (#17387)
  [FIX] Reactions may present empty names of who reacted when using Real Names (#17536)
  Allow to filter omnichannel analytics dashboards per departments. (#17463)
  [FIX] Uncessary updates on Settings, Roles and Permissions on startup (#17160)
  [NEW] Add the ability to send Livechat offline messages to a channel (#17442)
  [FIX] Federation attachment URL for audio and video files (#16430)
  [NEW] Add Livechat website URL to the offline message e-mail (#17429)
  LingoHub based on develop (#17520)
  RegExp improvements suggested by LGTM (#17500)
  [FIX] Replace obsolete X-FRAME-OPTIONS header on Livechat route (#17419)
  [FIX] LDAP login error on Enterprise version (#17497)
  [IMPROVE] [Apps-Engine] App user as the default notifier (#17050)
  [NEW] [Apps-Engine] New Livechat event handlers (#17033)
  [FIX] Change email verification label (#17450)
  Priority system messages were always created (#17479)
  ...

.docker/Dockerfile.rhel

@@ -1,6 +1,6 @@
 FROM registry.access.redhat.com/rhscl/nodejs-8-rhel7
 
-ENV RC_VERSION 3.2.0-develop
+ENV RC_VERSION 3.3.0-develop
 
 MAINTAINER [email protected]
 

.eslintrc

@@ -90,8 +90,7 @@
         "@typescript-eslint/interface-name-prefix": [
           "error",
           "always"
-        ],
-        "@typescript-eslint/explicit-function-return-type": "off"
+        ]
       },
       "env": {
         "browser": true,