Added pg_schema option to both the obo loaders
Added support for loading to a particular schema
Added loading of strain data to stock
added schema namespace
added temp table for pg backend to hold comments
added support for loading in temporary table
Removed method hooks, instead put the dependent method names to be
picked up from the attributes
Add ontology_namespace method in the loader. It uses the ontology
idspace in case default namespace is not set
Initial commit. Prune, look-up, commandline params

Added prune option to ease up cleaning data before every import
Added commandline parameter for data directory
Added methods for look-up of pub & cvterm
Adding loading of data to be imported, before execute, for look-up
Loading strain data, one row at a time. Incomplete
Added import for stock props & genotype
Corrected strain characteristics model
Finding cvterm for a particular cv
Added import for plasmid inventory & publications
Preliminary code for importing stock phenotype
Partial strain-phenotype import
Strain-phenotype importer; incomplete
Strain-phenotype importer; incomplete