Pointer Events touch-action attribute support

Test Description: Test will automatically check parsing behaviour of various touch-action combinations.

touch-action: basic verification


PASS default 
PASS stylesheet-none 
PASS explicit-auto 
PASS explicit-pan-x 
PASS explicit-pan-y 
PASS explicit-pan-x-pan-y 
PASS explicit-pan-y-pan-x 
PASS explicit-manipulation 
PASS explicit-none 
PASS explicit-invalid-1 
PASS explicit-invalid-2 
PASS explicit-invalid-3 
PASS explicit-invalid-4 
PASS explicit-invalid-5 
PASS explicit-invalid-6 
PASS explicit-invalid-7 
PASS explicit-invalid-8 
PASS explicit-invalid-9 
PASS explicit-invalid-10 
PASS explicit-invalid-11 
PASS explicit-invalid-12 
PASS explicit-invalid-13 
PASS not-inherited 
PASS inherit 
PASS initial