Fix leading and trailing whitespace in UTFX tests
Change the handling of dtb:a

Links are basically just rendered by rendering their content. We no
longer automatically assume that they contain an URL which has to be
translated using computer braille. For that we introduce a
span@class="brl:computer". Using this span you can get the content
translated using computer braille.
Merge branch 'master' of github.com:sbsdev/dtbook2sbsform
Change the span@class=brl:computer into an element

We would really like to move to a scheme where we can have all the brl
elements inside spans. However for consistency sake I guess we should
move all elements at the same time. So this means that for the moment
and to be consistent we will create an element named brl:computer for
computer braille.

Hopefully in the future we can move most of the brl:* elements to spans.
Fix the announcement of prodnotes
Add brl:computer to an url in the boilerplate
Support for hd inside lists
Merge branch 'master' into pipeline2

Conflicts:
	src/main/resources/xml/dtbook2sbsform.xsl
	src/test/utfx/block_boundary_test.xml
	src/test/utfx/dtbook2sbsform_test.xml
	src/test/utfx/handle_prodnote_test.xml
	src/test/utfx/lists_test.xml
	test_xsl/hyphenation_test.xml
Set FILL_COLUMN to 78 in order to get the same result as before