[Developer] Rename *.model.ts files in test fixtures

[Developer] Add support for UTF-16 (little endian) as exported by Excel

[Developer] Add visibility of models to TIKE UI

[Android] Fix info icon dimensions so menu text is aligned

Fix ic_light_action_info icon dimensions to match other menu icons

[iOS] Language-specific keyboard download regression fix.

[iOS] Resource Download Manager

[iOS] Settings notification bar refactor/prep

[iOS] Direct use of specific language lists for downloads