Add copyright header to all files

Use spaces instead of tabs in XML files

Define scope independent of folder name the project was checked out into

Re-add launcher icons for API 4-

Closes #19

See merge request !48

Upgrade H2

Closes #68

See merge request !46

Add documentation for ContactsManager methods

Closes #66

See merge request !49

Implement lifecycle method for wiping the mailbox

Closes #49

See merge request !41

Add a PRIMARY_KEY for contactId

Closes #72

See merge request !45

Block unsafe polymorphic types for Jackson deserialization

Closes #65

See merge request !43

Record time of last owner connection

Closes #40

See merge request !42

Upgrade gradle to v7.3

See merge request !44

Fix small setup token issues identified in review

Closes #50

See merge request !39

Properly nulls settings and adds a test that setup token can't be used anymore

Add shortcut methods Database#read() and #write()

Closes #67

See merge request !40

API endpoint for checking mailbox status

Closes #70

See merge request !38

Resolve "Check Java code style using CI"

Closes #71

See merge request !37

API endpoint for wiping the mailbox

Closes #62

See merge request !33

Add do-not-kill-lib from Briar and show its fragment whenever needed

Closes #38

See merge request !34

Encode QR code for pairing

Closes #48

See merge request !35

Store single-use auth token and implement setup API endpoint

Closes #50 and #42

See merge request !30