* Import the location styles in the correct file

* Add location field map styles

* Update the OS API KEY config to inform that it is used by both the maps and postcode lookup plugins

* Add class `app-location-field` and dataset attribute to the location field base template

* Add the new map plugin and client script

* Register the new map plugin

* Add defra-map dependency

* Sonar fixes (Define a constant instead of duplicating)

* Sonar fixes (No magic number)

* Sonar fixes (No magic number)

* Sonar fixes (use "return" consistently)

* Sonar fixes (out scope)

* Sonar fixes (No magic number)

* Sonar fixes (Explicit return value)

* Sonar fixes (Split it into smaller functions)

* Sonar fixes ("return" consistently)

* Sonar fixes (Split it into smaller functions)

* Add location maps client tests

* Fix formatting

* Add map service tests

* Delete map tile proxy routes (because there are other requests e.g. sprites)

* Add tests for map plugin routes

* Add shared client JS tests

* Add map proxy route tests

* Map prox test to cover no content type returned

* Add tile request transformer client tests

* Test to ensure initMaps only applies when there are location components on the page

* Test to ensure initMaps only applies when there are supported location components on the page

* Fix comment

* Sonar fixes (Use `export…from`)

* Sonar fixes (Prefer String.fromCodePoint)

* Add map routes JsDoc descriptions

* Update to latest defra-map

* Restructure location map tests

* Feature/DF-687 location maps easting & northing (#289)

* Add eastingnorthingfield to the list of supported location fields

* Add easting northing capability to location maps

* Remove unused osgrid

* Add easting and northing tests location map client tests

* Add map tests with initial field values

* Add OS grid reference to the location map

* Add OS grid reference to the location map tests

* Sonar fixes (Define a constant instead of duplicating this literal)

* Sonar fixes (Define a constant instead of duplicating this literal)

* Revert "Delete map tile proxy routes (because there are other requests e.g. sprites)"

This reverts commit 9bae11a.

* Add attribution to the dark and black/white styles

* Add VTS 3857 sprites

* Refactor to shared centerMap function

* Refactor to shared init map config center function

* Fix OsGridRef initial values test

* Add transformer test for raw.githubusercontent.com

* Add map dependency from new repo and stable branch

* Remove unused import

* Replace @defra/defra-map with @defra/interactive-map

* Replace @defra/defra-map with @defra/interactive-map in JSSoc and tests

* Update @defra/interactive-map to v0.0.3-alpha

* Update the interact plugin to use the new 'enable' method