im.SetReal(p, im.GetReal(p)+1) can now be written as im[p]+=1. If
the image is of complex type, im[p]+=1 expands to
im.SetComplex(p, im.GetComplex(p)+1)

The issues manifests when importing large "composite" compounds,
e.g. a ligand derived from several amino acids with the atoms not
listed in order of increasing ordinals. This was not a problem up
until now, since the components.cif dictionary was always (as
far as I know) listing the atoms ordered by ordinal.

It is completely sufficient to mark the organizer dirty. Fixes
BZDNG-250.

Also, added unit tests for slice operators of SequenceList,
SequenceHandle and AlignmentHandle exports. Fixes BZDNG-249.

added slider to change verbosity level from gui
if the verbosity level is changed from the shell the slider is updated automatically

For the integer image formats the io now properly scales the output values.

fixes  BZDNG-244

the vector export helper had to be moved to geom because otherwise the geom export depends on base whose headers might not be staged at the time of the compilation of the geom exports

Fixes: BZDNG-155