XHR now being used for many more functions, only load now remains to be
done
file value passed as 3rd param on serverQueue
moveFile() file param also has string replacing / to | on filename
replaceInFile() fileRef param also passed as 3rd param, investigate!
If not saving prev files refs and not loading (ie, the extra functions
now covered by XHR), if we're saving, send contents with XHR request,
both send timeStart and file of course