Remove use of moment.js.

moment.js was only used for client-side date/time validation of Spectrum File Query Tool, and it was maybe not even in a working state - so just changed to use server-side date/time validation, which is a bit more consistent with rest of app anyway.  The outdated version of moment.js that was being used was also erroneously triggering some vulnerability scanners.

Also made it so macOS will highlight file when shown in Finder from the Spectrum File Query Tool.

InterSpec/PhysicalUnits.h

@@ -149,7 +149,7 @@ namespace PhysicalUnits
   extern const char * const sm_positiveDecimalRegex;
 
   //printToBest____Units(...): makes an attempt to turn the input into a user
-  //  readable string.  The optional defineitions of units are convience
+  //  readable string.  The optional definitions of units are convenience
   //  variables for when you're working in units that are not from this
   //  namespace.
   //  TODO: instead of specifying number of digits past the decimal, should convert to using number of significant figures.