Avoid ambiguous functions such as empty()

Refactor multi-tree rowMapper functions

Refactor report classes

Fix: #2653 add ability to re-order parent families; make the first one the primary family

Unused imports

Add tree parameter to registration and password reset

Move language negotiation to middleware

Fix: #2760 - missing parameter when importing places from a tree

Fix error updating account preferences; use constants for preference names

Use simple list to specify order of censuses

Working on #2737 - refactor admin/media controller

Refactor user-cleanup to use post+get and new routes

Admin/media - the root of the media folders missing from list

Fix: #2479 - admin manage media showing wrong files; Attach filesystems to request

Add privacy-policy/impressum - #2654

Improve logic when masquerading as another user

Fix: #2719 cannot send messages using ugly urls; refactor controller as request handlers

Remove View:share() - it's just a global

Generate default values for census 'religion' columns

Rewrite error handler - #2686 and #2685

Remove dependency on UserInterface

No need to throw exceptions in assert()

Refactor pending changes to use service and request handlers

CodeStyle

Apply fixes from StyleCI (#2687)