Remove bluebird dependency

[bedhub]

With our new supported browser policy we can now remove bluebird as a dependency. We already removed it from the native desktop client part and we should change the flow typing.

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Test notes:

• [x] Check that the app generally works on all supported browsers (we removed async-to-generator translation)
  • [x] Firefox (Linux)
  • [x] Chromium (Linux)
  • [x] Safari
• [x] Check that signup still works
• [x] Check that creating a session works (password login)
• [x] Check that external login still works
• [x] Check that download all in desktop works
  • [x] Linux
  • [x] Windows
  • [x] Mac
• [x] #3382
• [x] Check that search index generally works
• [x] Check that search works on iOS
• [x] Check that while creating event alarms are loaded one by one
• [x] Check that calendar event invites generally still work
• [x] Check that attaching and uploading files works and is done one by one
• [x] Check that loading missed events after reconnect works
• [x] Adding/removing calendars works
• [x] Contact viewing still works
• [x] Async dropdowns (eg move to folder in MultiMailViewer)
• [x] Showing progreess in list (initially and later)
• [x] Swipe actions in the list
• [x] Date picker
• [x] Contact form requests
• [x] Recover login error handling (like wrong password)
• [x] Takeover error handling (like wrong password)
• [x] Login view: invalid gift card handling
• [x] Purchasing gift card
• [x] Redeeming gift card
• [x] Reach size limit in mail editor
• [x] Mail export w/ attachments
• [x] #3392
• [x] Inbox rules are still applied (both when loading the least and from WS updates)
• [x] Moving mails
• [x] Deleting mails
• [x] Viewing/scaling of mails still works, loading external content still works
• [x] Scrolling mail in viewer with shortcuts
• [x] #3390
• [x] Approving 2FA
• [x] Moving multiple mails from different mailboxes is not possible in search
• [x] Adding alias and running into limit
• [x] Changing mail signature
• [x] Configuring out of office
• [x] Displaying of template/knowledgebase groups in settings
• [x] Deleting account
• [x] Payment data dialog shows
• [x] Paypal dialog from payment viewer works (add paypal)
• [x] Change storage capacity
• [x] Switch subscription
• [x] Templates load and can be inserted

[charlag]

Regarding Promise.map:

https://github.com/sindresorhus/p-map

[charlag]

.catch() is now unsafely typed, it is not bound to the type of the promise (R) and we probably don't want to change the type of the chain in catch():

https://github.com/tutao/tutanota/blob/80937efa35353e16b4213e67e5b5dcfac3404f30/flow/api/libs.js#L51-L59

[johnbotris]

Moving multiple mails from different mailboxes is not possible in search

The folder button still remains but the dropdown is empty. Not sure if this exists on production already