Release v2.1.6

 - chore(release): v2.1.6 (b9bdb53)
 - fix(Slider): update bg for slider (74c6a0c)
 - feat(Web): Updated theme images (5d019f4)
 - Remove some nav items (f12af0c)
 - Pin ocramius/proxy-manager to 1.x (1eb1d9a)
 - Updated copyright year (35e4426)
 - Add codacy badge (689d3df)
 - Updated composer.lock (a394e06)
 - Use doctrine/migrations 1.3 (76fd669)
 - Pin versions. (ad0a040)
 - Remove 5.4 and 5.5 (9f45273)
 - Removed old migrations (465b2ae)
 - Updated dependencies. (a1490ba)
 - Enable Nachlese. (b988601)

Tagging release v2.1.5.

 - Remove slack. (e1f74ca)

Tagging release v2.1.4.

 - Activiate statistics. (2d5da89)
 - Decrease stats TTL. (b701e24)

Tagging release v2.1.3.

 - Fix tests for donor display and stats. (04a835f)

Tagging release v2.1.2.

 - Fix no-shows containing unpaid tickets. (c668c48)
 - Zeige Spender-Status beim Checkin. (73461a5)

Release 2.1.1