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

Fix integration test after merge race condition

See merge request !32

Implement contact management API

Closes #58, #57, #56, #45, and #4

See merge request !24

Implement file management API

Closes #55, #54, #53, #52, and #51

See merge request !28

Add unit tests for AuthManager

See merge request !27

Add API docs

See merge request !31

added README

See merge request !17

Use different Tor ports than Briar

Closes #34

See merge request !26

Create base IntegrationTest; move Contact; add Jackson

See merge request !29