Fix #1789

Remove `download_source` (originally started  in #1679)

[Android] Add check for `KMKey_CustomKeyboard`

[Android] Update exception handling for CloudRepository

[Developer] Character preview was not updating in mobile web touch test.

[Developer] Make sure New Project actually starts a new, blank project.

[Developer] Don't overwrite a BCP 47 code that the user has chosen when writing project templates.

[Developer] Don't overwrite a BCP 47 code that the user has chosen when writing project templates. Fixes #2046.

[Android] Fix missing FileProvider authority for MainActivity

[Android] Fix File Provider collision

[iOS] Fixes app intro keyboard picker tooltip

[Web] Test bug squashing

[Android] Silently install default dictionary model on app startup

[Web] Removes default key cap text behavior

[Developer] Fixes #2049. Rework Lexical Model template dialog to improve usability

[Developer] Removes final references to old wordBreaking property