Update HTML processing code to handle Component wiki pages

The Bugzilla Components have been split up into separate wiki pages
under QA/Bugzilla/Components/<component name>. This commit
re-assembles the appropriate pieces into one xhtml document so that
the BSA can use the content.

New text file components.txt includes all FDO components except for
'deletionrequest', which fails one of the tests in sanity.pl.

The url for the "long" help pages has been changed to
$WIKI$/QA/Bugzilla/Components/<component name>/Extended_Help
Shorten greeting statement for layout and readability

This commit shortens the opening "Greeting" statement in an attempt to
make it easier for people to read it quickly as their eyes move down
the screen towards the "meat" of bug reporting process.

We're also shortening the statement to make sure that it fits into the
layout properly -- on some browsers the text appears taller than the
background graphic beneath it.
Merge pull request #1 from colonelqubit/master

Update re:Component wiki pages