Merge pull request #45 from areshand/development

Remove #ERROR string
Fix SubmitPythonTransformationCommand for hierarchical data

Need to get table from hnode.  Can't just assume it's the base htable
from worksheet.
Shouldn't fail r2rml processing if column doesn't exist

When applying model to a different worksheet, it's possible a column
doesn't exist, so we should log an error, not crash.
Detecting as showing the encoding of CSV files. User can change encoding. Also accepting the number of lines to import for CSV files
Version 1.189 incorporating partial CSV import and character encoding
save research progress
Merge remote-tracking branch 'upstream/development' into research