Instead of copying a profile from the master config into memory again,
just use it in-place.  This saves ~308bytes of memory.

Prior to this there were 4 profiles in ram all the time, the 3 main
profiles and a copy of one of them.

This commit was aided by a side effect of the work done to clean up the
output of the cli dump command since it is now easy to conditionally
apply the changes to the memory addressed used to read/write cli
variables.  See 8c3a869251e2886941776036d29c8a9437acb11b.