Appella

- Adds sign-in with the registered email address and a six-digit code. When several accounts are linked, the appropriate account can be selected; if a date of birth is stored, it is confirmed as an additional step. - Allows eligible users to edit their first and last name, phone numbers, date of birth, and address in their own profile. - Shows eligible users the roles in their own profile and for externally managed people. - Adds notice-board filters for active and expired notices and keeps expired notices accessible from notifications and direct links. - Adds filters for private, group, and broadcast chats to chat search. - Improves the metronome and tuner by keeping the screen awake by default while they are in use. - Improves person creation by preselecting the currently filtered role. - Fixes opening email addresses in notices, saving chat attachments, and retaining input focus after sending a message. - Fixes an incorrect unsaved-changes warning when editing externally managed people. - Prevents users from accidentally selecting their own account as a new chat member.