luci-app-advanced-reboot: update to 1.1.1

luci-app-advanced-reboot: update to 1.1.1

This is a massive overwrite of the RPCD code from shell scrit to ucode
which in turn brought:
* update to the device json schema, which is now:
  * more structured
  * no weird names/object in json
  * customizable get, set, save commands per device (still need to be
    defined in ACL)
  * single partitions array now holding all data for
    toggling/labels/altMount
  * support for more than 2 bootable partition devices
* a _device_json_transform.jq file to translate schema from old format to
  new one for any WIP devices
* simplification of RPCD script as object can now be returned
* adjustments to the Javascript to parse new error messages and new RPCD
  reply structure
* integrate @systemcrash provided code/suggestions

I have tested both UBI volumes and dd-based information gathering on
alternative partition, I'd still welcome:
* tests on as many Linksys devices for actual partition toggling
  (rebooting to alternative)
* tests for both information gathering and partition toggling on:
  * "d-link,dgs-1210-28"
  * "mercusys,mr90x-v1"
  * "zyxel,nbg6817"

I also gladly welcome any code reviews for both updated javascript and
ucode.

Signed-off-by: Stan Grishin <stangri@melmac.ca>