Merge branch 'release/1.7.2' into develop

* release/1.7.2:
  Update latest version info.
  Update UUIDs for latest Mav Dev.
  Remove unreached code and fixed Sparkle updates for security.
  Update to fix Helper info.plist from build rather than the scheme.
  Update Helper plist now from the build and not the scheme.
  Change the Helper to just be a single helper that runs for all the different apps that need it.
  Big fix
  Move rename helper script to scheme post-action.
  Add code to remove the job when quitting the Installer, if it is running.
  Start the helper listening with the correct name (from the argv[0])
  Update build scripts
  Make the helper even further isolated by product installer, by incorporating the product into the helper name.
  Update to use INSTALLER_SUB_ID user variable instead of REPLACESUBID.
  Some more changes to get the XPC file copy working properly.
  Add code to actually do the copy/move.
  Add CopyMove Helper using XPC
Merge branch 'refs/heads/master' into develop

* refs/heads/master:
Change the MailBuildScripts repo to a github one. Oops!