Refs #5162. Added properties for the mask and grouping directories.

Added groupingFiles.directory property.
Added maskFiles.directory property.

Code/Mantid/Framework/Properties/Mantid.properties.template

@@ -37,6 +37,12 @@ instrumentDefinition.directory = @MANTID_ROOT@/instrument
 # Where to load parameter definition files from
 parameterDefinition.directory = @MANTID_ROOT@/instrument
 
+# Where to load Grouping files (that are shipped with Mantid) from
+groupingFiles.directory = @MANTID_ROOT@/instrument/Grouping
+
+# Where to load Mask files (that are shipped with Mantid) from
+maskFiles.directory = @MANTID_ROOT@/instrument/masks
+
 # Where to load OpenCL kernel files
 openclKernelFiles.directory = @MANTID_ROOT@/Framework/GPUAlgorithms/src
 
@@ -165,4 +171,4 @@ filefinder.casesensitive=Off
 
 # Control which geometry the Instrument View window displays, valid values 
 # are "Default", "Neutronic" or "Physical".
-instrument.view.geometry=Default
\ No newline at end of file
+instrument.view.geometry=Default