fixed paver script
separated gs/pg operations to their own modules
added delete confirmation
fixed issue with transient variable in GeoDB that caused exceptions after draggin PostGIS item into QGIS canvas
added some tests for postgis operations
fixed problem in postgis import dialog (schemas not changed when selecting a different connection in combo box)
follow up to 3d5b66b, refs #37, #82

deepcopy barfs out, the correct fix is to copy the
dict to ensure the pop doesn't happen on the object's
internal dict
Merge pull request #83 from boundlessgeo/iss-82-followup

follow up to 3d5b66b, refs #37, #82