[regression-tests] Fixed odd js script bug in 01-rpl-up-route.csc

Somehow expression 'packets = packets.substr() + "*"' results
in a simble 'object' instead of a 'string'.
This causes an error 'TypeError: Cannot find function substr in object
*'

Reproducible with Cooja script execution and Rhino 1.7 release 4.
[inga] replace WITH_UIP6 by new standard define UIP_CONF_IPV6
[inga] set RF230_CONF_RX_BUFFERS to 3
[inga] Fix gyroscope status in inga bootscreen
[inga] contiki-inga-main: Removed support for old RF230 driver
[inga] Major restructuring and cleanup of inga core

All inga-related configuration defines are now prefixed with INGA_CONF_

Address generation and handling is fixed and mainly relies on the EUI64.
Also auto-generation was improved.
The meaning of the node id for simulation and debugging only was emphasized.

All configuration options were documented.
[inga] Removed some unnecessary and outdated uip configs