* Make QMK Configurator work with e7-v1
This adds the missing info.json file for the e7-v1 keyboard which I
forgot to add to the original PR.
This allows to see the correct layout in QMK Configurator.
* Fix the ISO layout
The ISO layout has one extra key (hash/tilde) on row 3 right before
the enter key.
The e7-v1 PCB has this key wired at the same switch as the ANSI
backslash (since this switch is not used in ISO).
