* show all Device Types in Location Overview
* .
* .
* .
* get device types from config_definition
* reduce column to present device types
* .
* fixes
* .
* show/hide columns, even device types which are not present
* only show top n used device groups
* .
* .
* .
* Device Type Widget
* .
* .
* linter fix
* Update DeviceTypeController.php
Co-authored-by: Tony Murray <murraytony@gmail.com>
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