gSoC Implement a better database schema

[Caleb Cushing]

Most of what I want to do is fix this bug
https://bugs.kde.org/show_bug.cgi?id=172112 but as long as I'm up to
correcting things like proper handling of nulls, I might as well
correct the rest of the way the database works (quite a few
denormalized things in it). While working on it I hope also to make
the format portable enough to support other databases, such as
postgres. The only user interface change that I can see (that's not
planned) is the ability to specify ratings of 0, I would suggest
making the stars have 3 clicks, 1 full start, 2, half, 3 no star.

questions, comments, suggestions welcome.
-- 
Caleb Cushing

http://xenoterracide.blogspot.com