zapt should detect, warn and optionally sync if local and remote zapt or zcripts differ

[skilgoreT]

Detect and warn

• local or remote zapt is out of date w/r to github
  • if differences are detect offer to reset head and build (remote) - local mods just generate warning
• local or remote dev/vega/zcripts is out of date w/r to github
  • if differences are detected offer to rsync