Review home page

Reviewed for use after the move from sourceforge.
Added lilypond-doc category (only text on 'home', not the lilypond-doc page)
Update footer

Fix link to imprint
fix copyright statement
Review oll-lib page
Add lilypond-doc page
Review Tutorials page
Update main-nav partial

write "home" lowercase
move "Getting Involved" to the right
Review lilyglyphs page
Add lilyglyphs 0.2 manual
Review musicexamples page
Add musicexamples manual 0.2
Review 'Getting Involved' page
Adjust size of .OLL class