ergodox: Update my keymap to v1.5

ergodox: Update my keymap to v1.5

Major changes include:

* The **1HAND** layer has been removed.
* A `Delete` key is now available on the right thumb cluster.
* The **ADORE** layer received a major update, see the updated layout
  image.
* It is now possible to enable automatic logging for the **ADORE**
  layer, by setting the `ADORE_AUTOLOG` makefile variable to `yes` when
  compiling the keymap. It is off by default.
* The `~` key and the `Media Next/Prev` key have been swapped on
  the **base** layer.
* On the **ARROW** layer, `Backspace` has been replaced by `Enter`.
* There is some experimental support for entering Unicode symbols.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>