remove exec:createWinUpdate

remove exec:createWinUpdate since nsi script doesn't exist anymore.
Merge pull request #960 from MrVaykadji/patch-4

remove exec:createWinUpdate
New: Added fleex login
New: Added fleex info

—> Still left: style level indicator
New: Styled level indicator
New: Video fleexing (hash computation + subs upload / download)

Todo: Refactor hash computation into a separate npm package
Fix: Better status wording while preparing video
New: Send more info to server when fleexing video

—> might as well use it if we have it!
Fix: Bug causing video not to launch
New: Refactored hash computation into npm package
New: Integrated fleex player
Fix: Minor styling issues with player
Fix: Fleexing hangs when no subs to download
Fix: Show fleex-info when closing show detail
Cleanup: Simpler code for fleexUser persistance

(we don’t really need the events here)
New: Native language in settings + better loaders
Fix: Only launch video when it hasn't been cancelled
Fix: Temporarily deactivate updater + auth fix
New: Post-rebase fixes + updated 'about' section to mention fleex
New: Appended 'fleex' to app name