fix missing infinite stacks detection on signs lib
Fixes to translation.
Add german translation.
Print actions to log file when players write to signs.
Fix signs logging for real now.
add 3d extras mod with 3d nodebox-based bookshelf

by default, this redefines the default bookshelf.
also redefine moreblocks' empty bookshelf in a similar manner
check for presence of moreblocks before overriding empty bookshelf
make front edge of books uneven (looks better this way)
get rid of some useless comments
finish adding "open frame" bookshelf node def
minor tweak to top-side texture of open-frame bookshelf
add crafting recipe for bookshelf
minor readme update
More readme updates
improve textures for openframe bookshelf
Add support for colored text.
Remove debugging statement from last addition.
Fix wrapped lines not drawing.
change license to LGPL to conform to what's written in the forum post
since forever.

Also clarify it in the copyright message, spread the license file around
a bit, and remove some useless "last changed" dates since they've been
inaccurate for a long time.