Fix: #2592, Fix: #2593, Fix: #3431, Fix: #3446, Fix: #3638, Fix: #3676, Merge #2652 - Refactor LocationController into request handlers

Refactor controller as request handlers

Move user constants to the user interface class

Testing

Refactor controller into request handlers

Fix: external files cause error on manage media page

Fix: #3479 - need gender-specific translations for 'aged %s'

CodeStyle

Tests

Tests

Tests

Testing

Update birth date format to mirror transcription and record images on the FindMyPast website (#3598)

Fix date format
Fix test errors

Use constants for unknown surname and given names

Census assistant - for females get correct married name when there is more than one marriage (#3601)

whitespace

Fix for #3531 reveals broken test

#3529 - rename Factory to Registry

Refactor controller-actions as request-handlers

Replace controller-actions with request-handlers

Use factory to create caches and filesystems

Simplify the geographic data list

Refactor MediaFileController into request handlers

Refactor calendar control into request handlers

Change variable names