* apply token changes on leaving the dialog; this avoids unnecessary changes, races or possibly needed blocks if the user is just playing around
* ask before disabling PUSH; this is mainly to avoid accidental taps
* add a 'learn more' button pointing to instant-delivery
* add a switch for push notifications
* move 'instant delivery' down
* reword to 'force background connection'
* remove unused string
* respect user setting wrt pref_push_enabled
* f-droid defaults to PUSH = false
* get token directly when enabling PUSH
* delete FCM token when PUSH is disabled
the check before was too implicit and relied on DOZE_ASKED_DIRECTLY only.
but if the user was asked one time and went for chatmail again,
it did not work and the user was getting the message
"please enable 'ignore battery optimisations'"
even though they were using chatmail-only.
* implement Rpc API for parse_vcard
* allow to create Recipient from VcardContact
* display vcard view-type in incoming/outgoing messages
* fix linter warnings in Recipient class
* properly show vcard view-type in quoted messages
* display fallback avatar in quotes
* allow to attach vcard
* implement basic click listener
* timestamp type got changed from float to int
* set stick translation for "contact"
* share contact as vcard using the new Rpc.makeVcard API
* allow to import contact when clicking vcard
* show the device-update-message only once, not on every account switch
* instead of not adding device messages twice, always add and mark the chat as being noticed
* remove unused variable
* reword 'QR code' to 'Invite Code'
* reword adding classic email
* remove the 'new contact' things together
* add 'new classic contact' shortcut only for non-chatmail; it is still always available in the three-dot menu of 'new contact'
* use same menu for qr show/scan
* add 'new classic contact'
* remove 'scan' button from 'new classic contact' (ppl usually came from 'scan')
* rename to 'add contact manually'
* stay with 'qr code' for now
* add submenu to 'Explore Other Options'
* move 'Manual Login' to 'Explore Other Options'
* clearer titles, even if they are repetive
* move 'Scan QR' to 'Other'; this allows us to make 'Other' more outstanding
* cleanup layout
* tweak wording to 'Use Other Server' pointing to 'List in Browser', 'Classic Login', 'Scan Invite Code'
* use a standard secondary button for 'Use Other Server'
* show default onboarding server name
* reword to 'List Chatmail Servers'
* always close other-sign-up-options on tapping an option
* clarify that 'classic login' is about e-mail
* remove unused getConfig() variants
* hide IMAP folder options if is_chatmail == 1
* hide e2ee, show-system-contacts as well
* ignore system-contacts settings on chatmail (in case it was enabled before)
* fix bug: open WelcomeActivity when scanning backup from chatlist
* remove unused field manualConfigure
* remove unused code in startQrAccountCreation() and rename to startBackupTransfer()
* InstantOnboardingActivity: return to chatlist if not started from WelcomeActivity
* use OnBackPressedCallback
B. Petersen