STYLE: adjust tutorial Allrun scripts (issue #310)

- A few without a 'cd' at the start.
  Use $(getApplication) directly in more places (for clarity).

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/Allclean

@@ -1,5 +1,5 @@
 #!/bin/sh
-cd ${0%/*} || exit 1    # run from this directory
+cd ${0%/*} || exit 1    # Run from this directory
 
 # Source tutorial clean functions
 . $WM_PROJECT_DIR/bin/tools/CleanFunctions

tutorials/preProcessing/createZeroDirectory/snappyMultiRegionHeater/Allrun

@@ -1,5 +1,5 @@
 #!/bin/sh
-cd ${0%/*} || exit 1    # run from this directory
+cd ${0%/*} || exit 1    # Run from this directory
 
 # Source tutorial run functions
 . $WM_PROJECT_DIR/bin/tools/RunFunctions