Removal of Template, Blaze, BlazeLayout, FlowRouter, DDPRateLimiter, Session, UAParser, Promise, Reload and CryptoJS global variables (#12433)

* First wave of removal of Meteor global

* Second wave of removal of Meteor global

* Third wave of removal of Meteor global

* Fix tests

* Remove global variable SHA256

* Remove global variable WebApp

* Remove global variable EJSON

* Remove global variable Email

* Remove global variable HTTP

* Remove global variable Random

* Remove global variable ReactiveDict

* Remove global variable ReactiveVar

* Remove global variable Accounts

* Remove globals variables Match and check

* Remove global variable Mongo

* Remove global variable moment

* Remove global variable Tracker

* Remove global variable Blaze

* Remove global variables FlowRouter and BlazeLayout

* Add FlowRouter to eslint global in tests file

* Remove global variable DDPRateLimiter

* Remove global variable Session

* Remove global variable UAParser

* Remove global variable Promise

* Remove global variable Reload

* Remove global variable CryptoJS

* Remove global variable Template

* Fix ESLint

* Keep only one PhotoSwipe gallery open

* Refactor PhotoSwipe code

* Handle preloading in PhotoSwipe

* Use common fixCordova helper in uploadFilesList

* Fix log helper

* Fix the server-side handling of room_files collection

* Improvements in uploadedFilesList

* Adjust margins

* Add file name filter for uploaded files

* Add search form for uploaded files

* Add missing translation key

* Fix indentation in template

* Add layout changes

* Fix progressive loading in uploaded files list

* Add rel="noopener noreferrer" to links in uploaded files list

* Rename parameter

* Handle image loading for PhotoShipe gallery

* Show images in uploaded files list in PhotoSwipe gallery

* Add escapeCssUrl helper

* Escape thumbnail URL in uploaded files list

* Force download on uploaded files list

* Add a publication for uploaded files list with search text

* Update roomFiles.js

* Update roomFilesWithSearchText.js

Proudly making the real initial commit! Congratulations to all involved: Diego Sampaio, Marcelo Schmidt, Rafael Caferati and Rodrigo Nascimento