Unused imports

Remove 'booklet' views from ancestors and descendants charts.

Refactor database connection as middleware

CodeStyle

Fix: #2209 - 'time ago' calculations cause overflow on 32bit systems

Test coverage

Refactor the bootstrap process

Apply fixes from StyleCI (#2376)

Use PSR-15 request handlers as alternative to controllers/actions

Replace standalone emitter with middleware

Convert requests, middleware and reponses to use PSR-7, PSR-15 and PSR-17

Replace Bootstrap4 class with views

Testing

Apply fixes from StyleCI (#2334)

Fix #2332 - MOD() function is MySQL only

Testing

Testing

Testing

Tests

Testing

Testing