change playdoh submodule to use read-only url
most most of the logic toward find_maintain_x
Migrate system keyvalues for dynamic interfaces
Improve migrations and correct obscure cp1252 charset error
better print statements
Merge pull request #176 from murrown/fix_zone_dynamic_migrations

Fix zone dynamic migrations
Merge pull request #169 from akeym/ro_reqs

change playdoh submodule to use read-only url