Comment 2 for bug 1556847

ok. arale (and turbo) inject KEY_META on the hardware key. For convergence, KEY_META now supports the launcher shortcuts etc.

In order to solve this, two steps are needed:

a) add support for KEY_HOME to unity8 which opens the dash (aka goes to home) but does not process further actions like the KEY_META handling is supposed to do.
b) switch all devices with a hardware button to use KEY_HOME instead of KEY_META.