Fix for text resizing when printing

Text wasn't resizing properly when doing a print of the sequence.
Now we get the sequences being properly rendered for the whole
sequence when you set paper size to something ludicrous like a
3m square. Just in case you want to print an alignment as a
giant poster or something.
Draw the discontinuities for the really short discontinuities

We shouldn't be hiding that data
Add a VACUUM command to the nodejs implementation

The SQLITE databases were in desperate need of VACUUMing when
they got big