added extraction into slices again
adding download support to the base package. This also includes restructuring of the whole package on a small level. Should not touch the currently existing pieces.
finished base download
finished downloading script - starting restructure for imaging
Merge pull request #52 from wkerzendorf/gemini/urllist_download

Gemini URL List download
Further changes to longslit to make better fake data and improve guesses
Merge pull request #53 from mhvk/daycal-ok

Daycal ok
adding a relationship between object and slice.
Merge pull request #56 from wkerzendorf/gemini/add_point_source

Adding simple point source to database
restructure to alchemy package
adding a relationship between object and slice.
WIP adding link point source <-> slice
automatically generating point sources and linking mos point sources upon calculate_slice_geometries.
changes to import statements
finished restructuring to many-to-many relationship
added some documentation for the MOSObjects
moved the documentation into mos. general documentation restructure
Merge pull request #57 from wkerzendorf/gmos/mos/add_mos_object

add MOS Object
Add quick mosaic code
Ensure default_configuration_dir points to right place.  Plus lots of PEP8