SQL: Fix all browsing queries to use the new schema

This basically makes VNDB browsable again, but editing entries is still
broken.

I split off the get-old-revision functionality from the db*Get() methods
into db*GetRev(). This split makes sense even with the old SQL schema:
db*Get() had to special-case some joins/filters when fetching an older
revision, and none of the other filters would work in that case. This
split does cause some code duplication in that all db*GetRev() methods
look very much alike, and that the columns they fetch is almost
identical to the db*Get() methods. Not sure yet how to avoid the
duplication elegantly.

I didn't do a whole lot of query optimization yet (most issues require
extra indices, I'll investigate later which indices will make a big
difference), but I did fix some low hanging fruit whenever I encountered
something.

I don't think I've worsened anything, performance-wise.

0 files changed, 0 insertions, 0 deletions