sd html export: "single document" publish mode & support tables

Change-Id: I0c9f45011091f962d5304c9efcaebbed7e6c3d9d
macros_test: use "css" short form

Change-Id: I2e8d8773703df67d090059be8bd9f3c7c7335f78
liblo: fix check of xcomponent

Change-Id: I8a05a067681767518c688eb836bbe676bed05996
sd tests: tab to spaces

Change-Id: Icfc9d08b073f76d6c489a8b12a3c27b850a116ce