This adds 4 user dictionaries:
* anki.xml - Anki Desktop specific terminology: 'did'
* android.xml - Android and dependencies: 'miui.securitycenter'
* usernames.xml - Usernames in copyright declarations
* davidallison.xml - Anything else.
* Each user has their own dictionary to avoid merge conflicts
* But this is shared within the project
https://www.jetbrains.com/help/idea/spellchecking.htmlhttps://stackoverflow.com/a/36256338
Fixes 10713