Lovelace: Button card

* replace with querySelector("app-drawer-layout partial-panel-resolver, ha-drawer partial-panel-resolver") in particiular

FYI: some formatting was lost when coping text.
The first revison was striked out as it would make it compatible with beta
The second one works with stable as well.

Also some cards had already been updated by their own devs to work.

EDIT: beta4 has changed things again. mwc-drawer is dead, long live ha-drawer :wink:
The code above has been updated to address that.